Display panel, displayer and driving method
10235953 ยท 2019-03-19
Assignee
Inventors
Cpc classification
G09G2300/0443
PHYSICS
International classification
Abstract
The present invention discloses a display panel, a displayer and the drive method thereof, the display panel comprising a cell substrate and an array substrate. The array substrate comprises a plurality of gate lines and a plurality of data lines, wherein, a sub-pixel unit is defined by an i-th line gate line, an (i+1)-th line gate line, a j-th column data line and aj+1-th column data line, wherein, i and j are both natural number. The outermost side of the cell substrate is provided with an FPR film array comprising a first FPR film and a second FPR film, wherein, the first FPR film is corresponding to the first pixel electrode so as to convert emitting light of the first pixel electrode into polarized light in a first direction, and the second FPR film is corresponding to the second pixel electrode so as to convert emitting light of the second pixel electrode into polarized light in a second direction, wherein, the first direction is different from the second direction. The displayer shows the original images as well as the interference image at the same time, thereby the original image shown in the displayer cannot be seen and the display information in displayer is protected effectively.
Claims
1. A drive method for an array substrate in a display panel, the array substrate including a plurality of gate lines and a plurality data lines, wherein, a sub-pixel unit is defined by an i-th line gate line, an (i+1)-th line gate line, a j-th column data line and a (j+1)-th column data line, wherein, i and j are both natural number, the sub-pixel unit comprising: a first TFT, a gate of the first TFT being electrically connected to the (i+1)-th line gate line, a source of the first TFT being electrically connected to the j-th column data line, and a drain of the first TFT being electrically connected to a first pixel electrode by a first via; a first pixel electrode for controlling display of original image; and a second pixel electrode for controlling display of interference image; the method comprising the following steps: by a image process unit, acquiring original image of each frame from a system board, generating an interference image, and performing a superposition of the original image and the interference image so as to acquire mixed image and then transmit the mixed image to a time-controller; and by the Time-Controller, processing the mixed image and then transmitting data signal and gate signal to a source driver IC and a gate driver IC, respectively, so as to drive the first pixel electrode to display the original image and drive the second pixel electrode to display the interference image, wherein, the sub-pixel unit further comprising a second TFT, a gate of the second TFT being electrically connected to the i-th line gate line, a source of the second TFT being electrically connected to the (j+1)-th column data line, and a drain of the second TFT being electrically connected to the second pixel electrode by a second via; and the second pixel electrodes in a plurality of sub-pixel units are interconnected, extend to a non-display area and are connected with a control switch, a high level signal or a low level signal being input into the second pixel electrode by the control switch so as to control the second pixel electrode to display interference image.
2. The drive method according to claim 1, wherein, the interference image comprises an anti-color image of the original image or an image having the largest gray value.
3. The drive method according to claim 1, wherein, the first pixel electrode and the second pixel electrode are disposed in parallel, or the first pixel electrode is fully surrounded by the second pixel electrode, or the first pixel electrode is partially surrounded by the second pixel electrode.
4. The drive method according to claim 1, wherein, the display panel is a liquid crystal display panel or an organic light-emitting diode display panel.
Description
BRIEF DESCRIPTION OF THE DRAWINGS
(1) The above and other features of the present invention will become more apparent by describing in detail exemplary embodiments thereof with reference to the accompanying drawings, in which:
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DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS OF THE INVENTION
(10) Embodiments of the display panel, the displayer, the display device and driving method thereof provided by embodiments of the present disclosure will be described hereinafter in detail with reference to the attached drawings, wherein the like reference numerals refer to the like elements. The present disclosure may, however, be embodied in many different forms and should not be construed as being limited to the embodiment set forth herein; rather, these embodiments are provided so that the present disclosure will be thorough and complete, and will fully convey the concept of the disclosure to those skilled in the art.
(11) In addition, in the following detailed description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the disclosed embodiments. It will be apparent, however, that one or more embodiments may be practiced without these specific details. In other instances, well-known structures and devices are schematically shown in order to simplify the drawing.
(12) The thickness of each film layer and the size and shape of each area in the attached drawings do not reflect the actual parameters of each component of the array substrate, but are intended for illustrating the embodiments of the present invention only. It should be noted that the display panel is exemplified by a liquid crystal display panel and the cell substrate is exemplified by a color filter substrate. Of course, the array substrate and color filter substrate provided by the present invention are also applicable to an Organic Light-Emitting Diode (OLED) display panel.
(13) According to a general concept of the present invention, there is provided a display panel, comprising a cell substrate and an array substrate. The array substrate comprises a plurality of gate lines and a plurality of data lines, wherein, a sub-pixel unit is defined by an i-th line gate line and an (i+1)-th line gate line which are adjacent to each other, and a j-th column data line and a (j+1)-th column data line which are adjacent to each other, wherein, i and j are both natural number. The sub-pixel unit comprises a first TFT (thin film transistor), a first pixel electrode for controlling display of an original image and a second pixel electrode for controlling display of an interference image. A gate of the first TFT is electrically connected to the (i+1)-th line gate line, a source of the first TFT is electrically connected to the j-th column data line, and a drain of the first TFT is electrically connected to the first pixel electrode by a first via. The outermost side of the cell substrate is provided with a Film-type Patterned Retarder (FPR) film array, and the FPR film array comprises a first FPR film and a second FPR film, wherein, the first FPR film is corresponding to the first pixel electrode so as to convert the emitting light of the first pixel electrode into the polarized light in a first direction, and the second FPR film is corresponding to the second pixel electrode so as to convert the emitting light of the second pixel electrode into the polarized light in a second direction, wherein, the first direction is different from the second direction.
(14) In the display panel according to the embodiment of the present invention, the original image is shown in the first pixel electrode, while the interference image is shown in the second pixel electrode. The emitting light of the first pixel electrode for showing the original image is converted into the polarized light in the first direction by the FPR film array, and at the same time, the emitting light of the second pixel electrode showing the interference image is converted into the polarized light in the second direction, such that the original image shown in each sub-pixel unit is affected by the interference image. Therefore, the original image shown in the displayer cannot be seen and the display information in displayer is protected effectively. Compared with the prior art that the original image are shown within narrow visual angle range in a displayer, the technology in the present invention may prevent the display information from being stolen by a peeper more effectively.
(15) In an exemplary embodiment, referring to
(16) As shown in
(17) In an alternative embodiment, the first TFT T1 may be located in the vicinity of an intersection of the (i+1)-th line gate line and the (j+1)-th column data line, specifically, the gate of the first TFT T1 is electrically connected to the (i+1)-th line gate line, and the source of the first TFT T1 is electrically connected to the (j+1)-th column data line, and the drain of the first TFT T1 is electrically connected to the first pixel electrode 108 by a first via. The second TFT T2 is located in the vicinity of an intersection of the i-th line gate line and the j-th column data line, specifically, the gate of the second TFT T2 is electrically connected to the i-th line gate line, the source of the second TFT T2 is electrically connected to the j-th column data line, and the drain of the second TFT T2 is electrically connected to the second pixel electrode by a second via. That's to say, the first TFT T1 and the second TFT T2 are located in diagonal positions in each sub-pixel unit.
(18) In the array substrate shown in
(19) In the display panel according to the embodiment of the present invention, as shown in
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(21) In an exemplary embodiment, as shown in
(22) With respect to the array substrate shown in
(23) The present invention provides a liquid crystal display panel, as shown in
(24) In an exemplary embodiment, the emitting light of the first pixel electrode is converted into a left-handed (or laevogyrate) light by the first FPR film, and the emitting light of the second pixel electrode is converted into the right-handed (or dextrogyrate) light by the second FPR film so as to protect display information on display panel effectively and prevent the privacy of a user from leaking. As can be understood, the array substrate 404 certainly comprises a lower polarizing filter 4042, a second substrate 4044 provided on the lower polarizing filter 4042 and a pixel array 4046 provided on the second substrate 4044 (i.e. the pixel array as shown in
(25) In the liquid crystal display panel provided by the embodiments of the present invention, the emitting light of the first pixel electrode for showing the original image is converted into the polarized light in the first direction by the FPR film array, while the emitting light of the second pixel electrode for showing the interference image is converted into the polarized light in the second direction different from the first direction, such that the original image shown in each sub-pixel unit is affected by the interference image, that's to say, the original image and the interference image may be seen at the same time, thereby original image shown in the displayer cannot be seen and display information in displayer is protected effectively. Compared with the prior art that the original image are shown within narrow visual angle range in the displayer, the technology in the present invention may prevent the display information from being stolen by a peeper more effectively.
(26) In the liquid crystal display panel provided by the embodiment of the present invention, as shown in
(27) In an array substrate according to the embodiment of the present invention, as shown in
(28) In another array substrate according to the embodiment of the present invention, as shown in
(29) According to the embodiment of the present invention, there is provided a displayer, comprising a display panel, such as a liquid crystal display panel, provided by any one of the embodiments of the present invention, wherein, the display panel has the array substrate as shown in
(30) In the displayer provided by the embodiments of the present invention, by showing the original image in the first pixel electrode and showing the interference image in the second pixel electrode, the sub-pixel unit shows the original images as well as the interference image such that the original image shown in each sub-pixel unit is affected by the interference image, thereby the original image shown in the displayer cannot be seen and the display information in displayer is protected effectively. Compared with the prior art that the original image are shown within narrow visual angle range in the displayer, the technology in the present invention may prevent the display information from being stolen by a peeper more effectively.
(31) Specifically, as shown in
(32) It should be understood by the person skilled in this art that by controlling the interference signal input into the second pixel electrode 302, the switch between the peeking-proof display states, where the interference image conceals the normal display image, and the normal display states may be realized. Specifically, when the voltage value input into the second pixel electrode 302 is set as a voltage value corresponding to 0 gray value, the area of the second pixel electrode 302 has no any brightness, and does not affect the normal display of the first pixel electrode 304 so as to realize the normal display function.
(33) As can be seen from the exemplary embodiments, in the array substrate as shown in
(34) Meanwhile, the second pixel electrodes 302 are communicated with each other by non-display area, and the display in the areas of the second pixel electrodes 302 is controlled by a control switch. Hence, compared with the case that the second pixel electrodes 302 are not communicated with each other by non-display area and the display is controlled by a plurality of gate lines, the array substrate of the embodiments of the present invention decreases cost.
(35) The displayer of the embodiments of the present invention comprises the signal process device 702 as shown in
(36) Specifically, as shown in
(37) In the displayer provided by the embodiments of the present invention, the data signal of the original image is mixed with the data signal of the interference image by the image process unit 7024 so as to show original image as well as interference image at the same time in the sub-pixel unit. In this way, the original image shown in each sub-pixel unit is affected by the interference image; thereby the original image shown in the displayer cannot be seen and the display information in displayer is protected effectively. Compared with the prior art that the original image are shown within narrow view angle range in the displayer, the technology in the present invention may prevent the display information from being stolen by a peeper more effectively.
(38) In the displayer provided by the embodiments of the present invention, the image process unit 7024 is further configured to perform an anti-color process to the data signal of the original image, serve the acquired data signal of a anti-color image of the original image as a data signal for the interference image; and perform an interlace superposition of the data signal of the original image and the data signal of the anti-color image according to pixel lines to acquire a mixed signal and then output the mixed signal to the TCON 7026.
(39) Firstly, the system board 7022 outputs a n-th frame of original image to the image process unit 7024, and the image process unit 7024 performs an anti-color process for the n-th frame of original image to obtain a n-th frame of anti-color image. Specifically, each pixel of the n-th frame of original image is subject to an anti-color process, that's to say, if a RGB gray values of the pixel of original image is (x, y, z), the RGB gray values of the pixel after the anti-color process is changed as (255-x, 255-y, 255-z), the n-th frame of anti-color image is obtained after the anti-color process of each pixel of the n-th frame of original image is performed.
(40) Next, the image process unit 7024 performs an superposition of the n-th frame of original image and the n-th frame of anti-color image so as to form a n-th frame of mixed image. The n-th frame of mixed image is processed by the TCON 7026 (for time control) and then is output to the source driver IC (for outputting data signal) and the gate driver IC (for outputting gate signal) from the TCON 7026 so as to drive the display of the pixel.
(41) As shown in
(42) It should be understood by the person skilled in this art that by controlling the display signal of the interference image input into the second pixel electrode 110, the switch between the peeking-proof display states, where the interference image blocks the normal display image, and the normal display states may be realized. Specifically, when the display signal input into the second pixel electrode 110 is also display signal of the original image, the display image of the second pixel electrode 110 will not affect the normal display of the area of the first pixel electrode 108 so as to realize the normal display function.
(43) The image process unit 7024 may comprise Field-Programmable Gate Array (FPGA), by which the image process function may be realized. It should be noted that the image process function may be realized by a customized and dedicated image process chip.
(44) In the displayer provided by the embodiments of the present invention, the image process unit 7024 is further configured to perform an interlace superposition of the data signal of the original image and the data signal of the interference image according to the pixel lines to acquire a mixed signal and then output the mixed signal to the TCON 7026, wherein, the gray value of the interference image has the largest gray value, for example 255.
(45) Specifically, the system board 7022 outputs the n-th frame of original image to the image process unit 7024, and the image process unit 7024 performs an interlace superposition of the n-th frame of original image and the data signal of the interference image having a largest gray value according to the pixel lines so as to form a n-th frame of mixed image. The n-th frame of mixed image is processed by the TCON 7026 (for time control) and then is output to the source driver IC (for outputting data signal) and the gate driver IC (for outputting gate signal) from the TCON 7026 so as to drive the display of the pixel.
(46) As shown in
(47) It should be understood by the person skilled in this art that by controlling the gray value of the interference image display signal input into the second pixel electrode 110, the switch between the peeking-proof display states, where the interference image conceals the normal display image, and the normal display states may be realized. Specifically, when the gray value input into the second pixel electrode 110 is 0 gray value, the area of the second pixel electrode 110 has no any brightness, and does not affect the normal display of the first pixel electrode 108 so as to realize the normal display function.
(48) According to the embodiments of the present invention, there is provided a display device, comprising: a displayer provided by the embodiments of the present invention, and polarizing glasses for filtering the interference image. For example, if the emitting light of the original image that is normally shown is left-handed (or laevogyrate) light and the emitting light of the interference image is right-handed (or dextrogyrate) light, then the polarizing glasses is left-handed polarizing glasses.
(49) In the display device provided by the embodiment of the present invention, by means of the above-mentioned displayer, the original image shown in each sub-pixel unit is affected by the interference image, thereby the original image shown in the displayer cannot be seen and the display information in displayer is protected effectively. Compared with the prior art that the original image are shown within narrow view angle range in the displayer, the technology in the present invention may prevent the display information from being stolen by a peeper more effectively.
(50) Certainly, it should be understood by the person skilled in this art that the display device may be a displayer, a cell-phone, a TV, a laptop and All-in-on PC. The display device is provided to prevent the display information from being stolen by other users. The users of the displayer may see the normal image shown in the displayer, the polarizing direction of the polarizing glasses provided for the user of the displayer should concur with the deflection direction of the light deflection signal in the image signal of the original image of the displayer so as to filter the image signal of the interference image.
(51) According to another aspect of the invention, there is provided a drive method of the array substrate according to any of the embodiments, comprising: the image process unit acquires the original image of each frame from the system board 7022 and generates an interference image; and performs superposition process of the normal image and the interference image to acquire a mixed image and then outputs the mixed image to the TCON; then, the TCON processes the mixed image and then transmits data signal and gate signal to the source driver IC and the gate driver IC, respectively, so as to drive the first pixel electrode to display original image and drive the second pixel electrode to display interference image.
(52) With respect to the drive method of the array substrate according to any of the embodiments, by superimposing the original image on the anti-color image to mix them, the original image is shown in the first pixel electrode of the sub-pixel unit, and the interference image is shown in the second pixel electrode, so that the shown original image is affected by the interference image, thereby the original image shown in the displayer cannot be seen and the display information in displayer is protected effectively. Compared with the prior art that the original image are shown within narrow visual angle range in the displayer, the technology in the present invention may prevent the display information from being stolen by a peeper more effectively.
(53) In drive method of the array substrate according to any of the embodiments, the interference image is the anti-color image of the original image or an image having the largest gray value, for example, a white light having the gray value of 255.
(54) Taking the structure of the array substrate according to the embodiment for instance, and in conjunction with
(55) Step 1: performing sputter on the second substrate of the array substrate to deposit a metal layer, such as Aluminum, and performing a first patterning process, including applying photoresist, exposing, developing, etching, to form patterns of gate lines and gates 802;
(56) Step 2: depositing a gate insulator layer 804, such as SiN, by Plasma Enhanced Chemical Vapor Deposition (PEVCD) method;
(57) Step 3: depositing a semi-conductor layer, for example, depositing a-Si layer by PEVCD method or depositing Indium Gallium Zinc Oxide (IGZO) by a sputter process; performing a second patterning process, including applying photoresist, exposing, developing, etching, to form a pattern of active layer 806;
(58) Step 4: depositing a metal layer, such as Aluminum, by a sputter process, and performing a third patterning process, including applying photoresist, exposing, developing, etching, to form patterns of data lines, sources 808 and drains 810;
(59) Step 5: depositing a passivation layer 812, for example a SiN layer, by PEVCD method, and then applying a resin layer 814; performing a fourth patterning process, including applying photoresist, exposing, developing, etching, to form patterns of vias 816; a drain 810 of a TFT being exposed by the via 816;
(60) Step 6: forming transparent metallic oxide conductive material layer, for example N-type oxide semi-conductor, such as Indium Tin Oxides (ITO), performing a fifth patterning process, including applying photoresist, exposing, developing, etching, to form patterns of a first pixel electrode 818 and a second pixel electrode 820.
(61) In the embodiment of the present invention, the resin layer 814 is provided on the passivation layer 812 of the array substrate. The data lines and gate lines may be made of metal material, such as Cu, Al, Mo, Ti, Cr, W and the alloy thereof, and the gate lines may be a single layer structure and may also be multi-layer structure, such as Mo/Al/Mo, Ti/Cu/Ti, Mo/Ti/Cu. The gate insulator layer 804 may adopt SiN or SiO; and the gate insulator layer 804 may be a single layer structure and may also be multi-layer structure, such as SiO/SiN. The active layer 806 may adopt a-Si or oxide semi-conductor. The passivation layer 812 may adopt inorganic material, such as SiO. The resin layer 814 may adopt common resin, and may also adopt photosensitive resin. The pixel electrode (the first pixel electrode 818 and the second pixel electrode 820) may be made of transparent conductive oxide material, such as IZO, ITO and the like.
(62) According to the display panel, the displayer, the display device and the driving method thereof, the original image is shown in the first pixel electrode of the sub-pixel unit, and the interference image is shown in the second pixel electrode, so that the shown original image is affected by the interference image, thereby the original image shown in the displayer cannot be seen and the display information in displayer is protected effectively.
(63) Although several exemplary embodiments have been shown and described, it would be appreciated by those skilled in the art that various changes or modifications may be made in these embodiments without departing from the principles and spirit of the disclosure, the scope of which is defined in the claims and their equivalents.