46results about How to "Increase the number of gray levels" patented technology

A display device includes: pixel circuits; a signal electric potential generating unit generating a first signal electric potential used for increasing the number of gray scales of luminance of light emission of the pixel circuits and a second signal electric potential equal to or higher than the first signal electric potential, based on a video signal; and a control signal generating unit generating a control signal used for supplying the first and second signal electric potentials to the pixel circuits. Each of the pixel circuits includes a holding capacitor used for maintaining a signal voltage corresponding to the second signal electric potential, a writing transistor writing the second signal electric potential to the holding capacitor based on the control signal after writing the first signal electric potential, a driving transistor outputting a signal current based on the signal voltage corresponding to mobility of the driving transistor at the first signal electric potential written by the writing transistor, and a light emitting device emitting light in accordance with the signal current.

The invention discloses a silicon-based display adopting digital-analog hybrid drive. Pixels are driven to emit light through the method of combining the simulation amplitude modulation drive strategy and a digital pulse width modulation drive strategy, wherein the luminance of the pixels is determined by output current or voltage amplitude of the pixels in the subframe and the duty ratio of time of the output current or voltage of the pixels in the subframe, the frame of image is divided into a plurality of different digital subframes and simulation subframes, the digital drive strategy is adopted for the digital subframes, the time proportionable drive mode or luminance proportionable drive mode is adopted, the simulation drive strategy is adopted for the simulation subframes, many digital-analog converters with few digits are adopted, input data is converted into amplitude quantity of voltage or current, so that the pixels emit light, and the simulation subframes and the digital subframes are combined to generate the final display frame. The requirements of the simulation amplitude modulation drive strategy for the digital-analog converter and the requirements of the pixel circuit for the precision of analog quantity are reduced, and the conversion speed of the digital-analog converter and the contrast of the pixel luminance are improved.

The invention provides a method for adjusting LED (Light Emitting Diode) gray scale. The method comprises the following step of: adjusting the LED gray scale by using a current modulation method for reducing current passing through an LED, wherein the reduction amplitude at each scale is 1 / 2. In the invention, a pulse width modulation method and a current modulation method are combined, so that the gray scale expression capacity of a display screen is improved; and compared with the prior art, the gray scale is improved by 2m times (m is number of scales for current adjustment), so that the an image displayed by the display screen is finer and smoother, the hierarchy is clearer and a visual effect is better.

The invention relates to a liquid crystal display screen, a backlight circuit and a backlight driving method thereof, the backlight circuit comprises a plurality of data signal lines for accessing scanning signals; the plurality of scanning signal lines are used for accessing data signals; the plurality of emission control signal lines are used for accessing emission control signals; the light-emitting units are arranged in an array, each light-emitting unit comprises 2n light-emitting elements, and n is larger than or equal to 1; and a plurality of light-emitting drive circuits, wherein eachlight-emitting element is connected with one light-emitting drive circuit. Each light-emitting drive circuit is connected with one data signal line, one scanning signal line and one emission control signal line. The light-emitting driving circuit is used for accessing a scanning signal and a data signal to control the light-emitting time of the light-emitting element; and the control unit is usedfor accessing an emission control signal to control the enabling or closing of each light-emitting element in each light-emitting unit, and the gray scale number of the display screen can be increasedby segmenting the light-emitting time and combining the selection of the light-emitting area.

The present invention provides a display panel, a display device and a driving method thereof, and relates to the technical field of display, which can solve the problem that the display colors of display devices using the MIP LCD display technology are few due to the fact that the varieties of brightness that can be displayed by a single sub-pixel is few in the prior art. The display panel includes a plurality of sub-pixels; each of the sub-pixels including at least three display units, each of the display units has a driving circuit unit correspondingly, the driving circuit unit is configured to drive the display unit to be in a bright state or a dark state; and in the at least three display units of the same sub-pixel, at least two of the display units have different display brightnessin the bright state.

An embodiment of the invention discloses a liquid crystal display panel. Gray level can be increased, and the display quality of the liquid crystal display panel is improved. The liquid crystal display panel comprises a backlight module, a lower polarizer, an upper polarizer, a first liquid crystal layer, at least one second liquid crystal layer and at least one driving circuit, wherein the first liquid crystal layer is positioned between the lower polarizer and the upper polarizer, the second liquid crystal layers are positioned between the lower polarizer and the upper polarizer, and the driving circuits are used for driving the second liquid crystal layers. The liquid crystal display panel is applicable to liquid crystal display technology.

A display panel is provided, including an image data storage capacitor, a capacitive element, and four switches. The image data storage capacitor stores an image data. The sample unit has a control terminal for receiving a sample control signal. The capacitive element has a first terminal coupled to a pixel electrode of the image data storage capacitor via the sample unit. The first refresh unit has a control terminal coupled to the first terminal. The second refresh unit has a control terminal for receiving a refresh control signal. The third and first refresh unites are serially coupled with each other between a corresponding source line and the image data storage capacitor for receiving a data signal. The shunt unit has a control terminal coupled to the pixel electrode, a data terminal coupled to the first terminal, and another data terminal for receiving a shunt control signal.

The invention discloses a display driving method and system for a sixteen-order electrophoretic display device. The method comprises the following steps: A. receiving a gray scale display command by virtue of a display controller, and calling a waveform query table; B. transmitting waveform information of gray scale to a drive electrode controller by virtue of the display controller according to the gray scale display command; C. receiving the waveform information of the gray scale by virtue of the drive electrode controller, exerting voltage of DC balance restoration waveform, corresponding to a to-be-wiped gray scale, on a pixel through the drive electrode, moving the pixel and returning to a basic gray scale; and D. after completing wiping through the drive electrode controller, exerting appropriate gray scale driving waveform voltage through the drive electrode according to the waveform information of the gray scale so as to flash a new gray scale. The method and the system disclosed by the invention, through the gray scale driving method, can improve gray scale order, and can implement and improve the gray scale display effect of the electrophoretic display device. The method and the system, on the basis of DC balance principle, can effectively avoid damage of the drive electrode and a display medium due to residual voltage accumulation.

The invention provides a display method and electronic equipment. The display method is applied to a display device with a direct type backlight source and a liquid crystal display panel, and the direct type backlight source is divided into a plurality of control blocks. The display method comprises the following steps: determining a to-be-displayed image corresponding to to-be-displayed data, and a target control block related to the to-be-displayed image; if the to-be-displayed image and the target control block meet the control condition, adjusting the backlight brightness of the target control block, and adjusting the display data of the pixel units in the display area corresponding to the target control block to be different from the to-be-displayed data. A backlight brightness adjusting technology is combined with gray scale adjustment of a display panel to display an image, so the backlight brightness can be further reduced, and the purpose of saving power consumption of a backlight source is achieved. Due to the fact that the backlight brightness and the gray scale of the display panel are adjusted at the same time, display of more gray scale images can be achieved through different combinations and collocation, and the contrast ratio and the gray scale number of images displayed by the electronic equipment are improved.

The invention provides a multi-gray-scale pixel driving circuit and a display panel. According to the multi-gray-scale pixel driving circuit, a driving module, a light emitting module and a light-emitting control module are connected in series between a first potential and a second potential; the driving module and the light-emitting control module are used for controlling the light-emitting situation of the light-emitting module according to the preset time sequence, so that the light-emitting module can achieve multi-gray-scale display of low gray scale or high gray scale, and the gray scalenumber capable of being displayed is greatly increased. When the multi-gray-scale pixel driving circuit is applied to the display panel, the display of more gray scales can be realized.

The invention discloses a sub-pixel circuit, an active electroluminescent display and a driving method thereof. The sub-pixel circuit comprises at least one electroluminescent device, a first drivingtransistor or a second driving transistor and a third driving transistor, wherein the first driving transistor or the second driving transistor and the third driving transistor are connected with theelectroluminescent device; the cathode of the electroluminescent device is connected with electricity, the anode of the electroluminescent device is connected with the output end of the first drivingtransistor, the input end of the first driving transistor is connected with a signal line, the control end of the first driving transistor is connected with a scanning line; or the anode of the electroluminescent device is connected with the output end of the second driving transistor; the input end of the second driving transistor is connected with the output end of the third driving transistor;the input end of the third driving transistor is connected with electricity, the control end of the second driving transistor is connected with the scanning line, the control end of the third drivingtransistor is connected with the signal line, and resolution is improved by reducing loads on the scanning line and the signal line and changing the number of the signal lines.

An image processing method includes the steps of detecting the dynamic range of input image data, performing edge enhancement processing to increase the number of grayscale levels of the input image data, and performing dithering processing to reduce the number of grayscale levels of each pixel of the input image data. The number of pseudo grayscale levels is determined based on a parameter indicating the level of the dynamic range and a parameter indicating the level of the edge enhancement processing.

The invention relates to the technical field of image processing, and particularly discloses an infrared image detail enhanced dynamic range compression method. The method comprises the following steps of counting a histogram of an input infrared image AD value; searching a maximum AD value Xmax and a minimum AD value Xmin of which the pixel number is greater than 0 in the histogram; calculating amapped minimum AD value Xs0; calculating a mapped maximum AD value Xs5; searching the AD value Xp1 with the largest number of pixels in the [Xs0, Xs5] interval in the histogram; (6) searching a lowerboundary AD value Xs1 of the main region 1 from Xp1 to Xs0; searching an upper boundary AD value Xs2 of the main area 1 from Xp1 to Xs5; searching the maximum AD value Xp2 of the number of pixels inthe [Xs2, Xs5] interval in the histogram; searching a lower boundary AD value Xs3 of the main area 2 from Xp2 to Xs2; searching an upper boundary AD value Xs4 of the main area 2 from Xp2 to Xs5; calculating the AD number of the main region and the AD number of the transition region; calculating the number of mapping gray levels of the transition region; calculating the mapping gray degree of the main area 1; calculating the mapping gray degree of the main area 1; calculating mapping gray levels respectively corresponding to the AD values; and mapping the AD value of the input infrared image toa [Ys0, Ys5] range gray value, and displaying the gray value on a display device.

The invention discloses a low-frequency wavelet coefficient interpolation image equalization enhancement method, and the method comprises the following steps: S1, carrying out the single-layer decomposition so as to obtain an initial low-frequency sub-band and three high-frequency sub-bands; S2, carrying out the equalized calculation so as to obtain a first low-frequency sub-band, wherein the initial low-frequency sub-band has an initial sequence with the coefficient being greater than zero, and the first low-frequency sub-band has a first sequence with the coefficient being greater than zero;S3, calculating the difference between an initial number of initial sequences which are not equal to zero and a first number of first sequences which are not equal to zero; S4, calculating a plurality of insertion positions for inserting the first sequences and an insertion value of each insertion position, so as to obtain second sequences; S5, sequentially replacing the values of the second sequences with the values of the initial sequences according to the coefficient sequence from the small to the big, so as to obtain a third low-frequency sub-band with a third sequence; S6, reconstructingthe third low-frequency sub-band and three high-frequency sub-bands, so as to obtain a first image. The method can increase the gray scales (gray scale levels) while improving the image contrast, andenables the details of the image to be abundant.

The invention provides a display panel. The display panel comprises a backlight module and a display screen body, the backlight module comprises a central control panel, a control module, a first driving module, a second driving module and a plurality of light emitting diodes. The control module comprises a first control unit and a second control unit which are electrically connected with the central control board, the first driving module is electrically connected with the first control unit, and the second driving module is electrically connected with the second control unit; the display screen body comprises a first split body and a second split body, the light emitting diode corresponding to the first split body is electrically connected with the first driving module, and the light emitting diode corresponding to the second split body is electrically connected with the second driving module. At least two control modules are simultaneously mounted on one central control board, and more driving modules are controlled through more control modules, so that the number of backlight partitions is increased on the premise that the central control board is not increased.

The invention provides a source drive circuit. The source drive circuit comprises a data receiving module, a potential transfer module, a digital-analog conversion module and an output buffer module which are connected in sequence. The data receiving module comprises a first wire latch, a second wire latch, a first shifting register, a second shifting register, a first data storage device, a second data storage device, a first time schedule controller, a second time schedule controller, a mini-low voltage differential signal receiver and a P2P signal receiver; the first wire latch, the first shifting register, the first data storage device and the mini-low voltage differential signal receiver are connected in sequence, the second wire latch, the second shifting register, the second data storage device and the P2P signal receiver are connected in sequence, the first wire latch and the second wire latch are connected with the potential transfer module separately, the first time schedulecontroller is connected with the mini-low voltage differential signal receiver, and the second time schedule controller is connected with the P2P signal receiver.

The disclosed pixel unit for panel display comprises at least: one non-volatile memory with grid, source and drain electrodes electric connected to a scan line, a data circuit, and a storage capacitor, respectively. Wherein, the opposite drive method comprises: providing a scan voltage and a data voltage to change the initial voltage of the said memory, and then redefining the storage potential of the capacitor.

The invention relates to the field of image processing technology, in particular relates to a mixed gray modulation high-gray-level and high-definition image displaying method and device, which solve the technical problems of unreasonable design and the like in the prior art. The method comprises the steps of: A, data pre-processing and storing; B, dithering; C, data partitioning and hybrid modulating; and D, output displaying. Compared with the prior art, the mixed gray modulation high-gray-level and high-definition image displaying method and device have the advantages that the design is reasonable, the realization is easy, the strengths of various modulation methods are developed, the weaknesses of various modulation methods are avoided, and the advantages of various modulation methods are fully utilized to improve the gray level of the display screen and realize the high-definition display of the image.

The invention discloses an electrophoresis type display and a drive method thereof. The electrophoresis type display comprises a plurality of pixels, a first electrode layer, a second electrode layer, a driving voltage generation unit and an electrophoresis layer arranged between the first electrode layer and the second electrode layer. The driving voltage generation unit is capable of supplying a plurality of sets of different driving voltages so as to drive charged particles in the electrophoresis layer; and therefore, the gray scale number displayed by the electrophoresis type display can be increased.

The invention provides a display driving circuit and a display device. The display driving circuit comprises a plurality of groups of data signal lines, and each group of data signal lines comprises Ndata signal lines; a plurality of gate scan lines; multiple pixel driving units, wherein each pixel driving unit comprises N first MOS tubes and N second MOS tubes, the N first MOS tubes correspond to the N second MOS tubes in a one-to-one mode, the input ends of the N first MOS tubes are connected with driving voltage, and the output ends of the N first MOS tubes are connected and used for outputting driving current to the corresponding LED light-emitting units. Gates of the N first MOS tubes are connected with output ends of the N second MOS tubes in a one-to-one correspondence manner, input ends of the N first MOS tubes are connected with the N data signal lines in the same group in a one-to-one correspondence manner, and gates of the N first MOS tubes are connected with a gate scanning line. The gray scale number of the display device can be increased, the gray scale control sensitivity can be improved, and the display quality can be improved.

The invention provides a pixel driving circuit and a display device, the pixel driving circuit comprises a scanning signal line, a data signal line, a light emitting diode and a pixel driving circuit unit, and the pixel driving circuit unit comprises at least two cascade units. The pixel driving circuit unit is used for changing the number of the cascade units communicated with the data signal lines and the light emitting diodes so as to adjust the brightness of the light emitting diodes, thereby effectively improving the gray scale and the display quality of a display image.

The invention relates to an electrophoretic display, which comprises a temperature sensor, a memory, a central processing unit and a display unit. The temperature sensor senses and outputs a present temperature. A temperature characteristic table is stored in the memory. The central processing unit is electrically coupled to the temperature sensor and the memory, receives the present temperature and the temperature characteristic table, and matches the present temperature with the temperature characteristic table in order to obtain and output a drive reference or a time sequence. The display unit is electrically coupled to the central processing unit, receives the drive reference or the time sequence and achieves displaying according to the drive reference or the time sequence.

The invention belongs to the technical field of infrared image processing, and particularly discloses an infrared image optimization processing method based on spatial domain hybrid operation, which comprises the following steps: (1) compressing and mapping a large dynamic infrared image Iwdr to an 8-bit grayscale image Igrey by using a detail-enhanced dynamic range compression method; (2) performing smooth filtering on the Igrey to calculate a basic image Ibs; (3) extracting an image detail Idt from the difference between the Igrey and the Ibs; (4) calculating an image depth factor depth forIgrey edge detection; (5) calculating a detail enhanced image Idt _ enh according to the image detail Idt, the image depth factor depth, the image detail gain Gdt and the grayscale image Igrey; (6) fusing the detail enhanced image Idt _ enh and the Igrey according to an enhancement scale factor Renh to output a fused image Ifuse; and (7) performing edge-preserving and noise-filtering processing onthe fused image Ifuse, and outputting an optimized image Iopt. According to the method, the main interval gray scale number can be increased, the transition interval gray scale number is reduced, noise is suppressed, details can be enhanced, and image contrast and definition are improved.

The disclosure provides a driving method for an active matrix type bistable chiral nematic liquid crystal display, including: dividing a frame into at least two fields, wherein each field is formed by a plurality of pixel rows; driving one of the at least two fields by a plurality of driving operations, wherein a liquid crystal unit of each pixel in the field is driven to one of two predetermined states in each driving operation; and driving the other fields by the plurality of driving operations.

A display panel comprises a plurality of pixels (1-4;22;57). Each of the pixels (1-4;22;57) comprises a plurality of sub-pixel elements (5-9;31-46;48-56) occupying respective continuous sub-pixel element areas within a pixel area. At least two non-adjacent sub-pixel elements (5,7;45,46;52,53) are coupled to receive substantially a same driving signal. The coupling may be realized via a conductor (21) or by coupling the at least two non-adjacent sub-pixel elements (5,7;45,46;52,53) to respective driver circuits receiving substantially a same input signal.

The present invention relates to the technical field of image processing, and in particular discloses a dynamic range compression method for infrared image detail enhancement, which includes the following steps: counting the histogram of the AD value of the input infrared image; finding the maximum AD value whose number of pixels in the histogram is greater than 0 x max with minimum AD value X min ; Calculate the mapped minimum AD value X s0 ; Calculate the mapped maximum AD value X s5 ; Find [X in the histogram s0 , X s5 ] The AD value X with the largest number of pixels in the interval p1 ;(6) from X p1 to x s0 Search for the AD value X of the lower boundary of the main area 1 s1 ; from X p1 to x s5 Search the upper boundary AD value X of the main area 1 s2 ; Find [X in the histogram s2 , X s5 ] The number of pixels in the interval is at most AD value X p2 ; from X p2 to x s2 Search for the AD value X of the lower boundary of the main area 2 s3 ; from X p2 to x s5 Search the upper boundary AD value X of the main area 2 s4 ;Calculate the number of ADs in the main area and the number of ADs in the transition area; calculate the number of gray levels mapped in the transition area; calculate the number of gray levels mapped in the main area 1; calculate the number of gray levels mapped in the main area 1; calculate the corresponding gray levels of the corresponding AD values; input The AD value of the infrared image is mapped to [Y s0 , Y s5 ] range gray value and display it on the display device.

The present application discloses a self-luminous pixel circuit, which includes a driving module and a light-emitting module connected between the first variable potential and the second variable potential; the driving module controls the light flowing through the light-emitting module according to time sequence Current magnitude: The self-illuminating pixel circuit provided by the present application can be switched to a higher brightness adjustment range through the first variable potential and the second variable potential, thereby further increasing its gray scale number.