A circuit device includes a gradation voltage generation circuit, a correction processing circuit, and a driving circuit. The correction processing circuit performs correction processing on input display data to output corrected display data. The driving circuit drives an electro-optical panel by outputting gradation voltages corresponding to the corrected display data based on the gradation voltages. The gradation voltages are grouped into first to k-th groups. At this time, the correction processing circuit determines, by analyzing which group of the first to the k-th groups each input display data belongs to, a number of the input display data belonging to each group, and performs the correction processing based on the determined number.

The invention relates to various aspects of a μ-LED or a μ-LED array for augmented reality or lighting applications, in particular in the automotive field. The μ-LED is characterized by particularly small dimensions in the range of a few μm.

A display device has an image processing unit that determines an error for a pixel location that is based on the difference between an input color dataset and an output color dataset. The error is fed back to the image processing unit to propagate and spread across other neighboring pixel locations. In generating the output color dataset, an error-modified dataset that includes the input dataset and the error may first be generated. The error-modified dataset is examined to ensure the color values fall within the display gamut. The color dataset is also quantized and dithered to make the output dataset having a bit depth that is compatible with what the light emitters can support. Lookup tables and transformation matrices may also be used to account for any potential color shifts of the light emitters due to different driving conditions such as driving currents.

Techniques for modulating both amplitude and phase via a layer of liquid crystals are described. According to one aspect of the techniques, a voltage being applied or coupled across the layer of liquid crystals is controlled by gradually increasing the voltage from a low level to a high level to perform the AM in a first range and the PM in second range, where the characteristics of the liquid crystals is significant, for example, by increasing the thickness or optical birefringence of the layer of liquid crystals.

The invention relates to various aspects of a μ-LED or a μ-LED array for augmented reality or lighting applications, in particular in the automotive field. The μ-LED is characterized by particularly small dimensions in the range of a few μm.

A display device includes a plurality of pixels. One of the pixels includes a light emitting diode and a driving circuit coupled to the light emitting diode. A display frame period includes at least two emission periods. The light emitting diode emits light according to a data signal including a gray level in each of the at least two emission periods.

A display comprises a matrix comprising a plurality of N rows divided into a plurality of M columns of cells, each cell including a light emitting device; a scan driver providing a plurality of N scan line signals to respective rows of said matrix, each for selecting a respective row of the matrix to be programmed with pixel values; and a data driver providing a plurality of M variable level data signals to respective columns of the matrix, each for programming a respective pixel within a selected row of the matrix with a pixel value. A pulse driver provides a plurality of N driving signals to respective rows of the matrix, each driving signal comprising successive sequences of pulses enabling the cells to emit light according to their programmed pixel values during respective sub-frames of successive frames to be displayed. The data driver is arranged to provide variable level data signals to respective pixels within a selected row of the matrix during a limited number of sub-frames of a frame, the variable data levels corresponding to a programmed value of a plurality of bits of a pixel value for a frame. The data driver is further arranged to provide data signals to respective pixels within a selected row of the matrix during a remaining number of sub-frames of a frame, the data signals each corresponding to a programmed value of a single bit of a pixel value for a frame.

Disclosed are various aspects of a μ-LED or a μ-LED array for augmented reality or lighting applications, in particular in the automotive field. The μ-LED is characterized by particularly small dimensions in the range of a few μm.

An optoelectronic light emitting device includes an optoelectronic semiconductor component configured to generate light, a current source configured to generate a current, and a PWM transistor driven by a pulse-width modulated signal. The PWM transistor enters a first state or a second state based on said pulse-width modulated signal. The PWN transistor is configured to supply the optoelectronic semiconductor component with the current generated by the current source in the first state and to decouple it from the current generated by the current source in the second state. The current source is manufactured by a first technology and the PWM transistor is manufactured by a second technology.

A driving circuit for driving a target element with a driving current, including: a current source circuit connect to the target element and a first data line, wherein the current source circuit is configured to receive a first data signal through the first data line, and to control the magnitude of the driving current provided to the target element based on the first data signal; a time control circuit connected to the current source circuit, a second data line, and a pulse signal terminal, wherein the time control circuit is configured to receive a second data signal through the second data line, and to receive a periodic pulse signal via the pulse signal terminal, and to control the duration of the driving current provided to the target element in every driving period based on the second data signal and the periodic pulse signal.