CN117116223A - Reflective display device capable of realizing multi-gray scale display - Google Patents
Reflective display device capable of realizing multi-gray scale display Download PDFInfo
- Publication number
- CN117116223A CN117116223A CN202311088416.9A CN202311088416A CN117116223A CN 117116223 A CN117116223 A CN 117116223A CN 202311088416 A CN202311088416 A CN 202311088416A CN 117116223 A CN117116223 A CN 117116223A
- Authority
- CN
- China
- Prior art keywords
- sub
- pixel
- pixels
- display device
- pixel unit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 241001270131 Agaricus moelleri Species 0.000 claims abstract description 20
- 230000000694 effects Effects 0.000 claims abstract description 10
- 239000004986 Cholesteric liquid crystals (ChLC) Substances 0.000 claims description 18
- 239000002245 particle Substances 0.000 claims description 13
- 239000012776 electronic material Substances 0.000 claims description 12
- 239000012769 display material Substances 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 10
- 239000003094 microcapsule Substances 0.000 claims description 8
- 238000012163 sequencing technique Methods 0.000 claims 1
- 238000012937 correction Methods 0.000 abstract description 3
- 239000004973 liquid crystal related substance Substances 0.000 description 10
- 238000005516 engineering process Methods 0.000 description 7
- 241000282414 Homo sapiens Species 0.000 description 4
- 230000008859 change Effects 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- 239000003086 colorant Substances 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 230000005684 electric field Effects 0.000 description 2
- 238000002310 reflectometry Methods 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 206010047571 Visual impairment Diseases 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000004027 cell Anatomy 0.000 description 1
- 210000002858 crystal cell Anatomy 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
- G09G3/3607—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals for displaying colours or for displaying grey scales with a specific pixel layout, e.g. using sub-pixels
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133553—Reflecting elements
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1347—Arrangement of liquid crystal layers or cells in which the final condition of one light beam is achieved by the addition of the effects of two or more layers or cells
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/137—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering
- G02F1/13718—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering based on a change of the texture state of a cholesteric liquid crystal
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/165—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on translational movement of particles in a fluid under the influence of an applied field
- G02F1/166—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on translational movement of particles in a fluid under the influence of an applied field characterised by the electro-optical or magneto-optical effect
- G02F1/167—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on translational movement of particles in a fluid under the influence of an applied field characterised by the electro-optical or magneto-optical effect by electrophoresis
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/165—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on translational movement of particles in a fluid under the influence of an applied field
- G02F1/1675—Constructional details
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/165—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on translational movement of particles in a fluid under the influence of an applied field
- G02F1/1685—Operation of cells; Circuit arrangements affecting the entire cell
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/3433—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using light modulating elements actuated by an electric field and being other than liquid crystal devices and electrochromic devices
- G09G3/344—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using light modulating elements actuated by an electric field and being other than liquid crystal devices and electrochromic devices based on particles moving in a fluid or in a gas, e.g. electrophoretic devices
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2300/00—Aspects of the constitution of display devices
- G09G2300/04—Structural and physical details of display devices
- G09G2300/0439—Pixel structures
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/06—Adjustment of display parameters
- G09G2320/0673—Adjustment of display parameters for control of gamma adjustment, e.g. selecting another gamma curve
Abstract
The invention discloses a reflective display device capable of realizing multi-gray scale display, which comprises any one pixelThe unit comprises a plurality of sub-pixels, the area ratio of the sub-pixels accords with S i ：S i+1 And (2) 1:2, wherein if any pixel unit comprises n sub-pixels, n is more than or equal to 2 and less than or equal to 8, the pixels are ordered according to the sequence from 1 to n, and i and i+1 are integers not more than n. According to the above-mentioned division manner, the pixel unit can obtain the maximum display gray scale number while realizing the gamma=1 brightness correction curve, and the brightness difference value of two adjacent gray scales is equal, so as to effectively improve the color display fineness of the reflective display device. After the number of the sub-pixels included in any one pixel unit is determined, the spatial arrangement of the sub-pixels can be adjusted according to the size error of the pixel point, so that a more stable display effect is obtained.
Description
Technical Field
The invention relates to the technical field of displays, in particular to a reflective display device capable of realizing multi-gray-scale display.
Background
Flat panel display technology has an important role in the information industry and is listed as a national strategic emerging industry. The new display technology and related industries have more than three of the information industry, and the development speed and innovation of the technical level will directly influence the development of the electronic information industry. In the mainstream flat panel display technology, a backlight is required for a liquid crystal display (Liquid Crystal Display, LCD) to display, and an Organic Light-Emitting Diode (OLED) emits Light actively by itself. When outdoor display is performed, along with the reinforcement of an external light source, the internal light emitting mechanism of the display and the external light source cancel each other, so that the light intensity perceived by human eyes is very limited, and the display effect is poor. In addition, the flat panel display needs to be continuously powered to maintain the display content, and in the portable system with limited electric energy, the endurance of the display technology is obviously insufficient. Therefore, it is necessary to find a flat panel display which has low power consumption and conforms to the physiological habit of human beings. At present, china becomes the largest market consumer country of the flat panel display industry, and development of a novel flat panel display industry is not slow.
Bistable display technology has been increasingly emphasized in recent years due to the low power consumption characteristic. Common products using bistable technology include electronic ink screens, cholesteric liquid crystals, etc. Taking a cholesteric liquid crystal bistable display technology as an example, the display principle is as follows: the twisted liquid crystal layer can reflect light with a certain wavelength, and two stable states and one unstable state can be formed according to the difference of the applied voltage. When the voltage is low, the liquid crystal is in a Bragg reflection state, namely a P state (steady state), the arrangement of liquid crystal molecules is disturbed by applying a certain pulse voltage to the liquid crystal in the P state, an isotropic state is formed, no specific light is reflected, and the state is a focal conic state, namely an FC state (steady state). When the high voltage pulse is input again, all liquid crystal molecules are vertically arranged, and the state is a field nematic state, namely an H state (unsteady state). The conversion from P state to P state can be realized by rapidly removing the power from the H state voltage, the conversion from FC state can be realized by slowly removing the power from the H state voltage, and the conversion from P state to FC state can be realized by powering up the P state voltage to the FC state voltage. Since the R-V curve (reflectance-voltage curve) of cholesteric liquid crystals is very steep, it was found during the test that the intermediate available gray levels are small, and the P-state is essentially direct to the FC-state during power-up.
In practical applications, especially when the size of the liquid crystal panel is large, factors such as capacitive reactance and impedance may cause poor in-plane voltage uniformity of the liquid crystal panel, and the intermediate gray-scale state is sensitive to input voltage fluctuation, so that in order to maintain optical stability in the whole display panel, the cholesteric liquid crystal generally uses two gray-scale states of stable P and stable FC, which results in a small number of gray-scale display of the cholesteric liquid crystal, and cannot realize fine multi-gray-scale display. The method has the advantages that the research surface is provided, the gray level display of the electronic paper can be improved from 4-level gray level to 16-level gray level by optimizing the driving waveform, and the display effect of the image is improved. However, the mode of optimizing the driving waveform is mainly realized by a pulse amplitude modulation or pulse width modulation method, and then the display screen is driven by a row-by-row scanning mode so as to obtain a certain gray level. In the mature electronic paper gray scale design, a line-by-line and column-by-column scanning mode is generally adopted to scan the pixel grid, and multiple line-by-line scanning is needed to complete one frame of scanning, so that the gray scale display reflectivity in the mode is low and the display is unstable.
Disclosure of Invention
In order to solve the problems of few display gray scales, poor picture fineness and the like of a reflective display device in the prior art, the invention provides a reflective display device capable of realizing multi-gray scale display.
A reflective display device capable of realizing multi-gray scale display comprises a plurality of pixel units, wherein each pixel unit comprises n sub-pixels, the sub-pixels are ordered according to the sequence from 1 to n, and the area relation between the i sub-pixel and the i-1 sub-pixel is as follows: s is S i =2×S i-1 Wherein S is i Is the area of the ith sub-pixel, S i-1 Is the (i-1) th childThe area of the pixel, n is an integer not less than 2, i is more than 1 and less than or equal to n; the number of the sub-pixels contained in different pixel units is the same or different, and the sub-pixels in each pixel unit are independently controlled or controlled in a linkage manner; the gray scales presented between different pixel units are the same or different.
In some embodiments of the invention, 2.ltoreq.n.ltoreq.8.
In the display field, each pixel in the display element has a certain brightness intensity, namely from black (0) to white (1), and because the human eye perceives brightness and physical power are not in direct proportion but in a power function relationship, an algebraic relationship exists between the brightness intensity and gray scale of the pixel, and the algebraic relationship can be represented by a formula I:
，
wherein L is n The light intensity and the brightness (light transmittance) corresponding to gray scale are respectively A and G n The gray scale value is gamma, and the correction index is gamma. The curve obtained by the formula is called Gamma curve, and is a special tone curve.
In practical applications, the display causes a deviation in brightness of the image actually output, and the Gamma curve correction is used to correct the image display deviation by a certain method. When the gamma value is greater than 1, the highlight portion of the image is compressed and the dark (dark) portion is expanded, and when the gamma value is less than 1, the highlight portion of the image is expanded and the dark portion is compressed.
In the present invention, the inventors found through experiments that if the area allocation of the sub-pixels is not reasonable, the number of achievable gray scales would be reduced. For example, the area dividing ratio of the three sub-pixels is 1:2:3, which can finally realize 7 gray scales of 0, 1, 2, 3, 4, 5 and 6, and the number of gray scales is smaller than that of the area dividing mode provided by the invention. Even if the area distribution in some modes can realize the maximized gray scale number, for example, the area dividing ratio of three sub-pixels is 1:3:5, and the 8 gray scales of 0, 1, 3, 4, 5, 6, 8 and 9 can be realized, if the Gamma value in the Gamma curve is not 1, the brightness interval between the adjacent gray scales is large and small, so that the transition between the gray scales is uneven, and the fineness of the picture is poor. In the present invention, the number of sub-pixels obtained by division is limited, and the achievable gray scale is also ensured to be maximized, so in some embodiments of the present invention, in the Gamma curve of the pixel unit, γ=1, and the output brightness corresponding to each gray scale is proportional to the area or the sum of areas of any sub-pixels that are lighted in the corresponding pixel unit.
In some embodiments of the present invention, the display device further includes a gate line and a data line; the sub-pixel comprises a switching transistor, and the output end of the switching transistor is electrically connected with the pixel electrode; the control ends of the switching transistors of the n sub-pixels are connected with the same grid line, and the input ends of the n sub-pixels are respectively connected with different data lines.
When the reflective display device performs multi-gray scale display, the switch transistor of each sub-pixel controls the lighting switch of each sub-pixel to change the lighting area of the pixel unit containing each sub-pixel, thereby changing the brightness of the pixel unit. If a certain pixel unit included in the reflective display device includes n sub-pixels, the maximum number of gray-scale types that can be realized by the pixel unit is 2 n 。
If the area of the first sub-pixel is the smallest, 1, the area of the ith sub-pixel is 2 i-1 . Specifically, when each pixel unit is divided into 3 sub-pixels, the area ratio of the three sub-pixels is 1:2:4, by overlapping the areas of any two or three sub-pixels, 8 gray scales of 0, 1, 2, 3 (=1+2), 4, 5 (=1+4), 6 (=2+4), 7 (=1+2+4) can be realized; if each pixel unit is divided into 5 sub-pixels, the area ratio of the five sub-pixels is 1:2:4:8:16, and by the area superposition of any sub-pixels, 0, 1, 2, 3 (=1+2), 4, 5 (=1+4), 6 (=2+4), 7 (=1+2+4), 8, 9 (=1+8), 10 (=2+8), 11 (=1+2+8) can be realizedThe total of 32 gray levels of 12 (=4+8), 13 (=1+4+8), 14 (=2+4+8), 15 (=1+2+4+8), 16, 17 (=1+16), 18 (=2+16), 19 (=1+2+16), 20 (=4+16), 21 (=1+4+16), 22 (=2+4+16), 23 (=1+2+4+16), 24 (=8+16), 25 (=1+8+16), 26 (=2+8+16), 27 (=1+2+8+16), 28 (=4+8+16), 29 (=1+4+8+16), 30 (=2+4+8+16), 31 (=1+2+4+8+16).
In some embodiments of the invention, each of the subpixels may be configured in ascending or descending or disordered order of area.
In some embodiments of the present invention, the pixel unit has a structure as follows: the n sub-pixels are arranged according to a transverse linear arrangement, a longitudinal linear arrangement or a geometric longitudinal and transverse arrangement. As the name implies, a transverse linear arrangement or a longitudinal linear arrangement, i.e. in a linear manner (transverse, vertical); the geometric longitudinal and transverse arrangement is an arrangement mode which is applied in a transverse and longitudinal mode, and has a longitudinal arrangement relation and a transverse arrangement relation at the same time.
When the display device is manufactured, the size of the pixel point can have a certain range of fluctuation due to manual operation errors, molding condition errors and the like, and the fluctuation can influence the final pixel display effect. In the present invention, the inventor has found that if the width dimension error of the pixel unit is larger and the production error of the length dimension is more stable, the sub-pixels are sequentially arranged in the longitudinal direction, so that the phenomenon of stripe-shaped patterns of the reflective display device can be avoided; if the length dimension error of the pixel unit is larger and the width dimension error is more stable, the sub-pixels are sequentially arranged along the transverse direction, so that a striped pattern can be avoided; if the length and width dimension errors of the pixel units are unstable, the sub-pixels can be arranged in a geometric longitudinal and transverse arrangement mode.
In the process of graph updating, the driving waveforms of the reflective display device need to be converted between high and low levels, and the display screen needs to be selectively refreshed between colors, so that flickering is caused, and reading comfort is affected. Therefore, in order to solve this problem, in the present invention, by adjusting the arrangement of the sub-pixels, the residual image of the original image is reduced or even avoided, so that the image transformation of the reflective display device is more stable.
In some embodiments of the invention, the display material within the pixel cell is an electronic material having bistable character.
In some embodiments of the invention, the electronic material having bistable character is selected from at least one of microcapsules having electrophoretic effect, microcups having electrophoretic effect, cholesteric liquid crystals.
In some embodiments of the present invention, the microcapsules or microcups having an electrophoretic effect contain at least one of black particles, red particles, blue particles, and green particles therein; the reflection light of the cholesteric liquid crystal is at least one of red light, blue light and green light.
In order to realize clearer color display, in some embodiments of the invention, the reflective display device may further comprise a filter layer, where the filter layer includes a red filter unit, a blue filter unit, and a green filter unit; the red pixel comprises a red filter unit, the blue pixel comprises a blue filter unit, and the green pixel comprises a green filter unit.
In some embodiments of the invention, the reflective display device further comprises: and the brightness adjusting module is used for adjusting the relation between the gray scale value of the pixel unit and the display brightness.
The method for realizing multi-gray scale display of the reflective display device comprises the following steps of dividing the area of each pixel unit: assuming that each pixel unit is divided into n sub-pixels, the area relation between the ith sub-pixel and the (i-1) th sub-pixel is as follows: s is S i =2×S i-1 Wherein S is i Is the area of the ith sub-pixel, S i-1 N is more than or equal to 2 and less than or equal to 8, and i is more than or equal to 1 and less than or equal to n for the area of the i-1 th sub-pixel; and adjusting Gamma in the Gamma curve of the pixel unit to be 1 through a brightness adjusting module, so that the output brightness of the pixel unit and the corresponding gray scale are in a linear proportional relation.
In some embodiments of the present invention, the display device includes a gate line and a data line; the sub-pixel comprises a switching transistor, a control end of the switching transistor is electrically connected with the grid line, an output end of the switching transistor is electrically connected with the pixel electrode, and an input end of the switching transistor is electrically connected with the data line; n sub-pixels belonging to the same pixel are controlled by the same gate line, and data voltages of the n sub-pixels are respectively provided by different data lines.
When a plurality of gray scales are displayed, the pixel unit displays an initial gray scale, wherein the initial gray scale is any gray scale which can be realized by the pixel unit; controlling the variation of the driving voltage on the pixel electrode of the sub-pixel to enable the pixel unit to display the target gray scale, comprising: the gate line provides an electrical signal to control the switching transistor to be turned on so as to write a driving voltage to the data line through the pixel electrode; under the control of the driving voltage, the arrangement form of the electronic materials contained in the sub-pixels changes, the sub-pixels are turned on (displaying the target color) or turned off, and the areas of the turned-on or turned-off sub-pixels are adjusted, so that the pixel units containing the sub-pixels are switched from the initial gray scale to the target gray scale.
In some embodiments of the present invention, when the reflective display device comprises a layer of display material greater than 1, the maximum total gray scale that can be achieved is theoretically the product of the number of gray scales that can be achieved per layer, depending on whether the display material used between each layer is the same. For example, if the reflective display device comprises two layers of display material, one of which contains electronic material that is cholesteric liquid crystal, the maximum number of gray levels that can be achieved is 2 a The other display material layer contains microcapsule as electronic material, and the maximum gray scale number of the layer is 2 b The maximum gray scale achievable by the reflective display device having the double-layer display material layer is 2 a ×2 b The method comprises the steps of carrying out a first treatment on the surface of the If the reflective display device comprises three display material layers and the electronic materials contained in the three liquid crystal cells are different, the maximum gray scale number that can be realized is2 a ×2 b ×2 c . If the electronic materials contained in the multi-layer display material layers contained in the reflective display device are all the same, the maximum gray scale number achievable by the reflective display device is still 2 even if the multi-layer display material layers are contained because the same electronic material display principle is consistent n Wherein n is the number of sub-pixels included in the pixel unit.
The reflective display device capable of realizing multi-gray scale display is applied to electronic paper.
The beneficial effects are that: compared with the prior art, the reflective display device capable of realizing multi-gray scale display provided by the invention has the advantages that each pixel unit contained in the reflective display device comprises a plurality of sub-pixels with different areas, and the maximum 2 can be realized by simply controlling the area or the sum of the areas of the lighted sub-pixels n And (3) gray scale display, wherein the number of gray scales displayed by the pixel units is increased. On the premise that the gamma curve index gamma=1 of the pixel units contained in the reflective display device, the brightness difference value of two adjacent gray scales is equal while the maximum gray scale number is obtained, so that smooth gray scale transition is ensured, and the displayed picture is fine and smooth; by carrying out space arrangement of the subpixels to adapt to the size errors of the display elements, the problems of low reflectivity, unstable display, striped patterns and the like of gray scale display are avoided.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1: a pixel unit comprising 3 sub-pixels (all in an off state), the 3 sub-pixels being arranged in two configurations geometrically and longitudinally.
Fig. 2: one of the illuminated states of FIG. 1b, in which subpixel a 1 To be in the lighted state, the sonPixel b 1 And c 1 Is in the off state.
Fig. 3: two of the light states shown in FIG. 1b, in which the sub-pixel a 1 And b 1 To be in the light-on state, sub-pixel c 1 Is in the off state.
Fig. 4: three of the illumination states of FIG. 1b, in which the sub-pixel a 1 、b 1 And c 1 All are in the lighted state.
Fig. 5: a pixel unit comprising 4 sub-pixels (all off state), said 4 sub-pixels being arranged in two configurations geometrically and longitudinally.
Fig. 6: a pixel unit including 4 sub-pixels, the 4 sub-pixels being arranged linearly in a lateral direction.
Fig. 7: a pixel unit comprising 5 sub-pixels (all in an off state), the 5 sub-pixels being arranged in two configurations in a geometric aspect.
Detailed Description
For the purpose of making the objects, technical solutions and some of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be cleared and fully described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The following examples focus on the present invention by taking an electronic paper containing cholesteric liquid crystal molecules as an example, and the electronic paper containing microcapsules as a supplementary explanation, but the electronic paper contains electronic materials not limited to these two cases.
Example 1
An electronic paper capable of realizing multi-gray scale display comprises a plurality of pixel units, a plurality of grid lines and a plurality of data lines. For one of the pixels, for example, if the pixel unit is divided into a 1 、b 1 、c 1 And 3 sub-pixels, wherein the area ratio of the 3 sub-pixels is 1:2:4. The sub-pixel comprises a switching crystalAnd the control end of the switching transistor is connected with the grid line point, the output end of the switching transistor is electrically connected with the pixel electrode, and the input end of the switching transistor is electrically connected with the data line. The three sub-pixels belonging to the pixel unit are respectively controlled by different grid lines, and the data voltages of the three sub-pixels are provided by the same data line. When the pixel units contain cholesteric liquid crystal and perform different gray scale display conversion of the pixel units, the gate lines are used for providing electric signals to control the switching transistors corresponding to the sub-pixels to be turned on, then driving voltages are written into the data lines through the pixel electrodes, and under the control of the driving voltages, the arrangement morphology of cholesteric liquid crystal molecules contained in each sub-pixel is changed to control the brightness switch (from black (0) to white (1)) and the color display of each sub-pixel. The lighting area of the pixel unit is obtained by controlling the switch transistor corresponding to each sub-pixel, and because the Gamma value of the Gamma curve of the pixel is adjusted to 1 by the brightness adjusting module in the invention, the lighting area of the pixel unit is in linear proportional relation with the display gray scale, and therefore, the pixel unit is divided into a 1 、b 1 、c 1 For example, the 3 sub-pixels can realize gray scales of 0, 1, 2, 3, 4, 5, 6 and 7. In the reflective display device, the data voltage and duration required for driving the pixel unit to display the target gray scale are related to the gray scale displayed by the sub-pixel in the previous frame of picture display. The gray scale displayed by the sub-pixel in the previous frame of picture display can be considered as the initial gray scale of the pixel unit relative to the target gray scale, and any one of the gray scales can be realized for the pixel unit, wherein the target gray scale can be the same as the initial gray scale, or the target gray scale and the initial gray scale differ by at least one gray scale.
Specifically, when a constant voltage of 0V is applied to the common electrode, the pixel unit displays a gray scale (set to an initial gray scale), if the target gray scale of the pixel unit is consistent with the initial gray scale when displaying the next frame of picture, only the data voltage of 0V is required to be written to the pixel electrode controlling the pixel unit, the area of the lighted sub-pixel is not increased, at this time, the arrangement form of the cholesteric liquid crystal in the pixel unit is not changed, and the gray scale displayed by the pixel unit is the same as the gray scale displayed by the pixel unit in the previous frame of picture. When the target gray level and the initial gray level of the pixel unit differ by at least one gray level, the pixel unit can be switched from the initial gray level to the target gray level by controlling the switch of the switch transistor of the sub-pixel contained in the pixel unit according to the difference between the target gray level and the initial gray level without adjusting data voltage and changing the area of the lighted or turned-off sub-pixel.
In this embodiment, the length-width dimension errors of the pixel units included in the electronic paper are not stable, and the sub-pixels may be arranged in a geometric longitudinal and transverse arrangement manner, so that the 3 sub-pixels may be arranged in any one of two manners in the corresponding pixel units as shown in fig. 1. At this time, the 3 sub-pixels are all in an off state, and the pixel unit displays gray scale of 0. When the gray level to be displayed by a certain pixel unit included in the electronic paper is 1, the switching situation of the 3 sub-pixels is shown in fig. 2, wherein the sub-pixel a1 is in a lighting state, and the sub-pixels b1 and c1 are in a closing state; when the gray level to be displayed by a certain pixel unit included in the electronic paper is 3, the switching condition of the 3 sub-pixels is shown in fig. 3, at this time, both sub-pixels a1 and b1 are turned on, and sub-pixel c1 is in a closed state; when the gray level to be displayed by a pixel unit included in the electronic paper is 7, the switching condition of the 3 sub-pixels is shown in fig. 4, and at this time, the 3 sub-pixels are all in a lighting state. Because the cholesteric liquid crystals contained in the pixel units have different arrangement forms under the action of electric fields with different voltages, the wavelengths of light rays which can be reflected by the cholesteric liquid crystals are different, and therefore, the cholesteric liquid crystals can display different colors which can be recognized by human eyes by controlling the change of data voltages.
In this embodiment, another pixel unit included in the electronic paper is divided into a 2 、b 2 、c 2 、d 2 4 sub-pixels, and the area ratio of the 4 sub-pixels is 1:2:4:8. Through the saidThe gate line provides an electric signal to control the on of the switching transistor corresponding to the sub-pixel, then a driving voltage is written into the data line through the pixel electrode, and under the control of the driving voltage, the arrangement form of the cholesteric liquid crystal molecules contained in each sub-pixel is changed, and the brightness switch (from black (0) to white (1)) and the color display of each sub-pixel are controlled. The change of the lighting area of the pixel units makes each pixel unit containing the sub-pixel have the gray scale of 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 and 16 respectively. Because the electronic paper includes an unstable error in the length and width dimensions of the pixel units, the 4 sub-pixels may be arranged according to any one of two geometric longitudinal and transverse arrangement structures as shown in fig. 5. If the length dimension error of the pixel units included in the electronic paper is not stable, the 4 sub-pixels may be arranged in a lateral linear arrangement manner as shown in fig. 6.
In this embodiment, another pixel unit included in the electronic paper is divided into a 3 、b 3 、c 3 、d 3 、e 3 And 5 sub-pixels, wherein the area ratio of the 5 sub-pixels is 1:2:4:8:16, the opening of the switching transistor corresponding to the sub-pixel is controlled by providing an electric signal through the grid line, and the brightness switch (from black (0) to white (1)) and the color display of each sub-pixel are controlled under the control of the driving voltage. The pixel units can realize gray scales of 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30 and 31 respectively. The length and width dimension errors of the pixel units contained in the electronic paper are unstable, so that the 5 sub-pixels of the sub-pixels can be arranged according to any one of two ways of geometric longitudinal and transverse arrangement as shown in fig. 7.
To meet the arrangement requirement of the pixel unit structure, the shape of the sub-pixel may include, but is not limited to, rectangle and L, where L refers to approximately L, and may also be described as a shape similar to the numeral "7"; in the embodiment, the arrangement structure of the sub-pixels in the pixel unit does not limit the arrangement structure of the sub-pixels in other pixel units in the electronic paper, as long as the arrangement structure of the sub-pixels meets the size requirement of the pixel unit.
In other embodiments, if the pixel units in the electronic paper include electrophoretic microcapsules, and the voltage microcapsules may be divided into blue electrophoretic particles and black electrophoretic particles, thereby realizing color display. When changing the gray scale of display, the switch transistor corresponding to the sub-pixel is controlled to be turned on by providing an electric signal to the gate line, then a driving voltage is written to the data line by the pixel electrode, and under the control of the driving voltage, the electrophoretic particles contained in each sub-pixel move to change the relative position of the electrophoretic particles in an electric field, so that the brightness switch (from black (0) to blue (1)) and the color display of each sub-pixel are realized.
When the initial display state of the electronic paper is a white picture, namely, the pixel displays 0 gray scale, when a voltage of 0V is applied to the pixel electrode, the original positions of the electrophoretic particles are kept still, and the pixel continues to display 0 gray scale. Through applying different pulse voltages to the pixel electrode, realize different colour display, control simultaneously whether the pulse voltage is applied to the pixel electrode on the different sub-pixels, adjust the area that lights of pixel unit, realize that pixel shows 1, 2, 3, 4, 5.
In addition, in this embodiment, in order to implement clearer color display, the electronic paper may further have a filter layer, which may enhance or darken different colors, so as to adjust the brightness and contrast of the electronic paper display device.
Designed by the area dividing method of the pixel units, each pixel unit can independently display 2 at maximum n And (n is the number of sub-pixels contained in the pixel unit), so that the number of gray scales which can be displayed by the pixel is increased, and the color richness of color picture display is increased. And the pixel units can be switched between gray levels by driving the area where the sub-pixels are turned on or turned off, so that the free switching between all gray levels of the pixel can be reducedThe required time is increased, the influence on the refresh rate of the display picture is almost negligible while the number of the display gray scales is increased, and the smoothness of the animation playing is ensured. The finally obtained display device has better image picture fineness and no obvious image afterimage.
The above disclosure is illustrative of the preferred embodiments of the present invention and, of course, should not be taken as limiting the scope of the invention, and those skilled in the art will appreciate that all or a portion of the procedures described above can be performed without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (11)
1. The reflective display device capable of realizing multi-gray-scale display comprises a plurality of pixel units, and is characterized in that each pixel unit comprises n sub-pixels, the sub-pixels are ordered according to the sequence from 1 to n, and the area relation between the i sub-pixel and the i-1 sub-pixel is as follows: s is S i =2×S i-1 ，
Wherein S is i Is the area of the ith sub-pixel, S i-1 The area of the ith sub-pixel is i-1, n is an integer not less than 2, i is more than 1 and less than or equal to n;
the number of the sub-pixels contained in the pixel units is the same or different; the sub-pixels in each pixel unit are independently controlled or controlled in a linkage way; the gray scales presented between different pixel units are the same or different.
2. The reflective display device according to claim 1, wherein n is 2.ltoreq.8.
3. The reflective display device according to claim 1, wherein γ in the Gamma curve of the pixel unit is 1, and the output brightness corresponding to each gray level is proportional to the area or the sum of areas of any sub-pixels that are lit in the corresponding pixel unit.
4. The reflective display device according to claim 1, wherein the pixel unit has a structure of: the n sub-pixels are arranged according to a transverse linear arrangement, a longitudinal linear arrangement or a geometric longitudinal and transverse arrangement.
5. The reflective display device according to any one of claims 1-4, wherein the display material in the pixel unit is an electronic material having a bistable character.
6. The reflective display device according to claim 5, wherein said electronic material having bistable character is at least one selected from the group consisting of microcapsules having electrophoretic effect, microcups having electrophoretic effect, and cholesteric liquid crystals.
7. The reflective display device according to claim 6, wherein the microcapsule or the microcup having an electrophoretic effect contains at least one of black particles, red particles, blue particles and green particles; the reflection light of the cholesteric liquid crystal is at least one of red light, blue light and green light.
8. The reflective display device according to claim 1, further comprising: and the brightness adjusting module is used for adjusting the relation between the gray scale value of the pixel unit and the display brightness.
9. The method for realizing the multi-gray-scale display of the reflective display device is characterized by comprising at least two steps:
(1) Each pixel unit contained in the reflective display device is divided into areas as follows: dividing each pixel unit into n sub-pixels, and sequencing the n sub-pixels according to the sequence from 1 to n, wherein the area relation between the ith sub-pixel and the (i-1) th sub-pixel is as follows: s is S i =2×S i-1 ，
Wherein S is i Is the firsti areas of sub-pixels S i-1 I is more than 1 and less than or equal to n and is more than or equal to 2 and less than or equal to 8, and the area of the i-1 th sub-pixel is more than or equal to 1 and less than or equal to n;
(2) And adjusting Gamma in the Gamma curve of the pixel unit to be 1 through a brightness adjusting module, so that the output brightness of the pixel unit and the corresponding gray scale are in a linear proportional relation.
10. The method of claim 9, wherein a voltage is applied to the electronic material contained in the sub-pixel through the pixel electrode corresponding to the sub-pixel, so that the sub-pixel displays a target color and a corresponding gray scale, and the display color and the corresponding gray scale of the pixel unit respectively correspond to the superposition of the display color and the corresponding gray scale of all the sub-pixels contained in the sub-pixel.
11. Use of a reflective display device according to any of claims 1-8 for realizing a multi-gray scale display as an electronic paper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311088416.9A CN117116223A (en) | 2023-08-28 | 2023-08-28 | Reflective display device capable of realizing multi-gray scale display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311088416.9A CN117116223A (en) | 2023-08-28 | 2023-08-28 | Reflective display device capable of realizing multi-gray scale display |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117116223A true CN117116223A (en) | 2023-11-24 |
Family
ID=88803588
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311088416.9A Pending CN117116223A (en) | 2023-08-28 | 2023-08-28 | Reflective display device capable of realizing multi-gray scale display |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117116223A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040108818A1 (en) * | 2002-12-10 | 2004-06-10 | Eastman Kodak Company | Color OLED display having repeated patterns of colored light emitting elements |
| CN101907800A (en) * | 2009-06-02 | 2010-12-08 | 京东方科技集团股份有限公司 | Liquid crystal display panel and liquid crystal display |
| CN101976548A (en) * | 2010-11-15 | 2011-02-16 | 华映视讯（吴江）有限公司 | Driving method of electronic paper |
| CN102591087A (en) * | 2012-03-14 | 2012-07-18 | 大连东方科脉电子有限公司 | 3D (three-dimensional) mixed-color electronic paper |
| CN103177669A (en) * | 2011-12-23 | 2013-06-26 | 元太科技工业股份有限公司 | Display device and display method capable of displaying multiple gray scales |
| CN105989793A (en) * | 2015-01-29 | 2016-10-05 | 上海和辉光电有限公司 | Pixel array, organic light emitting diode display and method of displaying images on display |
| CN107851414A (en) * | 2015-07-24 | 2018-03-27 | 夏普株式会社 | Pixel layout and display |
| CN108962122A (en) * | 2018-08-14 | 2018-12-07 | 上海天马微电子有限公司 | Display panel and display device |
| CN116631350A (en) * | 2023-05-26 | 2023-08-22 | 惠科股份有限公司 | Display color shift optimization method, display driving method and display |
-
2023
- 2023-08-28 CN CN202311088416.9A patent/CN117116223A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040108818A1 (en) * | 2002-12-10 | 2004-06-10 | Eastman Kodak Company | Color OLED display having repeated patterns of colored light emitting elements |
| CN101907800A (en) * | 2009-06-02 | 2010-12-08 | 京东方科技集团股份有限公司 | Liquid crystal display panel and liquid crystal display |
| CN101976548A (en) * | 2010-11-15 | 2011-02-16 | 华映视讯（吴江）有限公司 | Driving method of electronic paper |
| CN103177669A (en) * | 2011-12-23 | 2013-06-26 | 元太科技工业股份有限公司 | Display device and display method capable of displaying multiple gray scales |
| CN102591087A (en) * | 2012-03-14 | 2012-07-18 | 大连东方科脉电子有限公司 | 3D (three-dimensional) mixed-color electronic paper |
| CN105989793A (en) * | 2015-01-29 | 2016-10-05 | 上海和辉光电有限公司 | Pixel array, organic light emitting diode display and method of displaying images on display |
| CN107851414A (en) * | 2015-07-24 | 2018-03-27 | 夏普株式会社 | Pixel layout and display |
| CN108962122A (en) * | 2018-08-14 | 2018-12-07 | 上海天马微电子有限公司 | Display panel and display device |
| CN116631350A (en) * | 2023-05-26 | 2023-08-22 | 惠科股份有限公司 | Display color shift optimization method, display driving method and display |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10229641B2 (en) | Driving method of electrophoretic display | |
| KR101072375B1 (en) | Liquid Crystal Display Device Automatically Adjusting Aperture Ratio In Each Pixel | |
| KR100896389B1 (en) | Liquid crystal display device | |
| JP4702355B2 (en) | Manufacturing method of liquid crystal display device | |
| CN100516998C (en) | Liquid crystal display device and its driving method | |
| US20040196237A1 (en) | Image quality improvement for liquid crystal displays | |
| CN103106860A (en) | 4-primary color display and pixel data rendering method thereof | |
| US8264646B2 (en) | Transflective display with white tuning | |
| US20100123743A1 (en) | Method of driving a light source, light source apparatus for performing the method and display apparatus having the light source apparatus | |
| TW201306011A (en) | Writing data to sub-pixels using different write sequences | |
| KR100526633B1 (en) | Liquid crystal display apparatus using homogeneously aligned liquid crystal and drive method therefor | |
| CN107111990A (en) | Font control and relevant device and method for electro-optic displays | |
| JP5223730B2 (en) | Display device and driving method of cholesteric liquid crystal display panel | |
| WO2008023415A1 (en) | Liquid crystal display element, its driving method and electronic paper with same | |
| WO2013097442A1 (en) | Liquid crystal display panel and drive method therefor | |
| TWI794830B (en) | Electro-optic displays, and methods for driving same | |
| CN102402033A (en) | Column region correction scanning drive method for smectic liquid crystal display screen | |
| JP2004521396A (en) | Color liquid crystal display device having electrically switchable color filters | |
| CN201204028Y (en) | Liquid crystal display apparatus | |
| CN117116223A (en) | Reflective display device capable of realizing multi-gray scale display | |
| KR101202588B1 (en) | LCD and driving method thereof | |
| KR101113997B1 (en) | Liquid crystal display and method for driving the same | |
| CN101303494A (en) | Liquid crystal display apparatus and drive method thereof | |
| WO2010014601A2 (en) | Transflective display with white tuning | |
| US20030197823A1 (en) | Liquid crystal display |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |