CN108828828B - Method for improving yellow display frame of quantum dot liquid crystal display and quantum dot liquid crystal display - Google Patents
Method for improving yellow display frame of quantum dot liquid crystal display and quantum dot liquid crystal display Download PDFInfo
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- 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
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- 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
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- 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
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- 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
- G02F1/1336—Illuminating devices
- G02F1/133614—Illuminating devices using photoluminescence, e.g. phosphors illuminated by UV or blue light
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Abstract
The invention provides a method for improving yellow display frame of a quantum dot liquid crystal display and the quantum dot liquid crystal display. The method for improving the yellow display picture of the quantum dot liquid crystal display comprises the following steps of setting the number ratio of red sub-pixels, green sub-pixels and blue sub-pixels in each pixel unit as 1: 1: a, where a > 1, the brightness value corresponding to the original gray scale signal G0 of the blue sub-pixel obtained by looking up a table for each pixel unit under the front view condition is L0, and the actual gray scale signals are respectively input to all the blue sub-pixels in the pixel unit, so that the sum of the brightness values of all the blue sub-pixels in each pixel unit under the front view condition is equal to L0, that is, the actual gray scale signal input by a single blue sub-pixel is reduced while the total brightness of the blue sub-pixels under the front view direction is kept unchanged, thereby relatively increasing the total brightness of the blue sub-pixels under the oblique view direction, and further solving the problem that the display picture of the quantum dot liquid crystal display under the large viewing angle is yellow.
Description
Technical Field
The invention relates to the technical field of display, in particular to a method for improving yellow display picture of a quantum dot liquid crystal display and the quantum dot liquid crystal display.
Background
With the development of science and technology and the progress of society, people increasingly depend on information exchange, transmission and the like. The display device, as a main carrier and material basis for information exchange and transmission, has become a hot spot and a high place for many scientists engaged in information photoelectric research to compete.
Quantum Dots (QD) are extremely small inorganic nanocrystal particles that are invisible to the naked eye. The quantum dots emit colored light when subjected to light or electric stimulation, the color of the light is determined by the composition material and the size and shape of the quantum dots, and generally, the smaller the particle, the longer the absorption wavelength, and the larger the particle, the shorter the absorption wavelength. The quantum dots can absorb short-wave blue light and are excited to show long-wave band light color, and the characteristic enables the quantum dots to change the color of light emitted by the light source.
The quantum dot display technology has been comprehensively upgraded in various dimensions such as color gamut coverage, color control accuracy, red, green and blue color purity and the like, is considered as an improvement point of the global display technology, and is also considered as a display technology revolution affecting the world. The full-color-domain display is realized in a revolutionary way, and the color of the image is restored most truly.
The quantum dots are mostly three-dimensional nano materials consisting of II-VI group or III-V group elements. Due to quantum confinement effects, the transport of electrons and holes inside is restricted, so that the continuous energy band structure becomes a separated energy level structure. When the quantum dots are different in size, the quantum confinement degree of electrons and holes is different, and the discrete energy level structures are different. After being excited by external energy, the quantum dots with different sizes emit light with different wavelengths, namely light with various colors.
The quantum dots have the advantages that: by regulating the size of the quantum dots, the light-emitting wavelength range can cover infrared and the whole visible light wave band, the light-emitting wave band is narrow, and the color saturation is high; the quantum dot material has high quantum conversion efficiency; the material performance is stable; the preparation method is simple and various, can be prepared from the solution, and has rich resources.
However, after the light passes through the quantum dots, the emergent direction is random, when the divergent light passing through the quantum dots passes through the liquid crystal, all light of the corresponding pixel point can not be well controlled any more, and the LCD can generate a light leakage phenomenon. The LCD device adopts the working principle that the rotation of the liquid crystal is controlled by voltage by utilizing the optical rotation and the birefringence of the liquid crystal, so that linearly polarized light passing through the upper polarizer rotates along with the liquid crystal and comes out of the lower polarizer (vertical to the upper polarizer). So that the polarizer plus the liquid crystal cell acts as an optical switch. Obviously, such an optical switch does not fully contribute to the light emitted by the quantum dots.
In order to avoid the phenomenon of light polarization elimination caused by the quantum dots being placed in a liquid crystal box, a technical scheme of a quantum dot liquid crystal display has been proposed in the industry, namely, the quantum dots are placed in a polarizer. As is well known, a polarizer is formed by combining multiple films, and generally includes the following layers, from bottom to top: the protective film comprises a surface protective film, a first protective layer, a polarizing layer, a second protective layer, an adhesive layer and a stripping protective film. During attachment, the stripping protective film is torn off to expose the adhesive layer, the polarizer is attached to the substrate to be attached through the adhesive layer, and after attachment, the surface protective film is usually torn off; the most central part of the polarizer structure is a polarizing layer, usually a polyvinyl alcohol (PVA) layer containing iodine molecules having a polarizing effect; the first protective layer and the second protective layer are transparent cellulose Triacetate (TAC) layers, and are mainly used for maintaining the stretched state of the polarons in the polarizing layer, avoiding the loss of water of the polarons and protecting the polarons from being influenced by the outside. Therefore, the layer-by-layer structure of the polaroid is very suitable for adding the quantum dot film into the polaroid to form the quantum dot polaroid, so that the layer not only improves the light energy utilization rate of backlight, but also improves the color gamut of a panel, improves the effect of the polaroid and simplifies the process in forming preparation. In addition, quantum dots are applied to a Color Filter (CF) to prepare a quantum dot Color Filter (QD Color Filter, QDCF) to replace a traditional Color Filter, so that the Color gamut of the display can be further improved.
However, the above-mentioned quantum dot design has a disadvantage that the light pattern emitted from the Liquid Crystal Display (LCD) has a specific shape depending on the light source and the backlight structure, and the brightness of the light emitted from the LCD varies with different viewing angles, such as a typical Lambert-type backlight, in which the ratio of the brightness L (θ) in the oblique viewing direction to the brightness L (0) in the front viewing direction is the cosine of the oblique viewing angle θ, i.e., L (θ) ═ L (0) — cos (θ).
It can be found from the luminance gray scale graph of red, green and blue (R/G/B) light emitted from the non-quantum dot liquid crystal display shown in fig. 1 under the front view condition and the luminance gray scale graph of red, green and blue light emitted from the non-quantum dot liquid crystal display shown in fig. 2 under the oblique view condition of 60 °, that when the quantum dot design is not adopted, the main problem of the liquid crystal display under the side view is that the luminance curve under the side view has a middle region with slow rising, so that under the gray scale of the region, the side view luminance of the red, green and blue light is insufficient, and further the common water washing (wash out) phenomenon is generated.
Because the quantum dot is a photoluminescent material, when the quantum dot is placed in a liquid crystal display, the emitted light form of the quantum dot is excited to be wider than the original backlight light form, or the light re-emitted by exciting the quantum dot, the ratio of the brightness of the quantum dot in the oblique viewing direction to the brightness of the quantum dot in the front viewing direction is usually greater than the cosine of the oblique viewing angle theta, therefore, when the liquid crystal display adopts the quantum dot design, the red light and the green light emitted by the liquid crystal display are excited light respectively passing through the red quantum dot and the green quantum dot, and the blue light is not generated by exciting the quantum dot, so that the brightness of the red light and the green light in the oblique viewing angle is greatly improved, and the brightness of the blue light in the oblique viewing angle is still at a lower level, thereby the proportion of red, green and blue display in the normal viewing angle is balanced, and the picture color is normal, the actual brightness of the red and green light in the large viewing angle is, thereby causing a yellow phenomenon of a display picture with a large viewing angle.
Disclosure of Invention
The invention aims to provide a method for improving the yellow display picture of a quantum dot liquid crystal display, which can solve the problem that the display picture of the quantum dot liquid crystal display is yellow under a large visual angle.
The invention also aims to provide a quantum dot liquid crystal display, which can solve the problem that a display picture of the quantum dot liquid crystal display is yellow under a large visual angle.
In order to achieve the above object, the present invention provides a method for improving the yellow color of a display screen of a quantum dot liquid crystal display, where the quantum dot liquid crystal display includes a backlight module and a quantum dot liquid crystal panel, the backlight module is arranged opposite to the quantum dot liquid crystal panel, the quantum dot liquid crystal panel includes a plurality of pixel units arranged in an array, each pixel unit includes a red sub-pixel, a green sub-pixel, and a blue sub-pixel, the red sub-pixel and the green sub-pixel each include a quantum dot film, and in each pixel unit, the number ratio of the red sub-pixel, the green sub-pixel, and the blue sub-pixel is 1: 1: a, wherein a > 1; the method comprises the following steps:
for each pixel unit, the brightness value corresponding to the original gray-scale signal G0 of the blue sub-pixel under the front view condition is obtained by the lookup table to be L0, and the actual gray-scale signals are respectively input to all the blue sub-pixels in the pixel unit, so that the sum of the brightness values of all the blue sub-pixels under the front view condition in each pixel unit is equal to L0.
The actual gray scale signals respectively input to all the blue sub-pixels in a pixel unit are the same or different.
In each pixel unit, the number ratio of the red sub-pixel, the green sub-pixel and the blue sub-pixel is 1: 1: 2.
the invention also provides a quantum dot liquid crystal display, which comprises a backlight module and a quantum dot liquid crystal panel which are oppositely arranged, wherein the backlight module is used for providing a display light source for the quantum dot liquid crystal panel, the quantum dot liquid crystal panel comprises a plurality of pixel units which are arranged in an array, each pixel unit comprises a red sub-pixel, a green sub-pixel and a blue sub-pixel which are arranged in parallel, the red sub-pixel and the green sub-pixel respectively comprise quantum dot films, and the number ratio of the red sub-pixel to the green sub-pixel to the blue sub-pixel in each pixel unit is 1: 1: a, wherein a > 1; when displaying, the blue sub-pixel of each pixel unit has an original gray-scale signal G0, the luminance value of the blue sub-pixel of the pixel unit corresponding to the original gray-scale signal G0 under the front view condition is L0, and the sum of the luminance values of all the blue sub-pixels under the front view condition in each pixel unit is equal to L0 by inputting the actual gray-scale signals to all the blue sub-pixels in the pixel unit respectively.
The quantum dot film belongs to a quantum dot polaroid.
The quantum dot film belongs to a quantum dot color filter.
The backlight module is a blue light source.
The blue sub-pixel includes a transparent film in a same layer as the quantum dot film.
The quantum dot films of the red sub-pixel and the green sub-pixel respectively contain red quantum dots and green quantum dots.
The quantum dot films of the red sub-pixel and the green sub-pixel both contain mixed red quantum dots and green quantum dots.
The invention has the beneficial effects that: the method for improving the yellow display picture of the quantum dot liquid crystal display comprises the following steps of setting the number ratio of red sub-pixels, green sub-pixels and blue sub-pixels in each pixel unit as 1: 1: a, where a > 1, the brightness value corresponding to the original gray scale signal G0 of the blue sub-pixel obtained by looking up a table for each pixel unit under the front view condition is L0, and the actual gray scale signals are respectively input to all the blue sub-pixels in the pixel unit, so that the sum of the brightness values of all the blue sub-pixels in each pixel unit under the front view condition is equal to L0, that is, the actual gray scale signal input by a single blue sub-pixel is reduced while the total brightness of the blue sub-pixels under the front view direction is kept unchanged, thereby relatively increasing the total brightness of the blue sub-pixels under the oblique view direction, and further solving the problem that the display picture of the quantum dot liquid crystal display under the large viewing angle is yellow. The quantum dot liquid crystal display adopts the method to adjust the display brightness of the blue sub-pixel, and can solve the problem that the display picture of the quantum dot liquid crystal display is yellow under a large visual angle.
Drawings
The technical solution and other advantages of the present invention will become apparent from the following detailed description of specific embodiments of the present invention, which is to be read in connection with the accompanying drawings.
In the drawings, there is shown in the drawings,
FIG. 1 is a graph of a luminance gray scale of red, green, and blue light emitted by a non-quantum dot LCD under a front view condition;
FIG. 2 is a graph of gray scale of red, green, and blue light emitted by a non-quantum dot LCD under 60 degree squint;
FIG. 3 is a schematic plan view of a RGB sub-pixel of a quantum dot LCD according to the present invention;
FIG. 4 is a graph of normalized luminance of blue sub-pixels at different viewing angles in a quantum dot liquid crystal display according to the present invention.
Detailed Description
To further illustrate the technical means and effects of the present invention, the following detailed description is given with reference to the preferred embodiments of the present invention and the accompanying drawings.
The invention firstly provides a method for improving the yellow display picture of a quantum dot liquid crystal display, which aims at the quantum dot liquid crystal display and comprises a backlight module and a quantum dot liquid crystal panel which are oppositely arranged, wherein the backlight module is used for providing a display light source for the quantum dot liquid crystal panel so as to enable the quantum dot liquid crystal panel to display an image picture, the quantum dot liquid crystal panel comprises a plurality of pixel units which are arranged in an array mode, each pixel unit comprises a red sub-pixel, a green sub-pixel and a blue sub-pixel which are arranged in parallel, and the red sub-pixel and the green sub-pixel respectively comprise quantum dot films.
Specifically, the quantum dot liquid crystal display may adopt a design of a quantum dot polarizer, quantum dots carried by the quantum dot liquid crystal display are disposed in the polarizer, the quantum dot film is disposed between the functional film layers of the polarizer, and the quantum dot film and the functional film layers of the polarizer constitute the quantum dot polarizer, at this time, the quantum dot films of the red sub-pixel and the green sub-pixel may respectively contain the red quantum dot and the green quantum dot, or the quantum dot films of the red sub-pixel and the green sub-pixel may also both contain the mixed red quantum dot and green quantum dot.
In addition, the quantum dot liquid crystal display may also adopt a design of a quantum dot color filter, wherein quantum dots carried by the quantum dot color filter are arranged in the color filter, and at this time, quantum dot films of the red sub-pixel and the green sub-pixel respectively contain red quantum dots and green quantum dots.
Specifically, the backlight module is a blue light source.
Specifically, the blue sub-pixel comprises a transparent film which is in the same layer as the quantum dot film, and the transparent film and the quantum dot film in the same layer belong to a quantum dot color filter or a quantum dot polarizer.
It should be noted that, the red sub-pixel and the green sub-pixel each include a quantum dot film, the blue light emitted by the backlight module excites the red quantum dot and the green quantum dot in the quantum dot film to respectively emit red light and green light, that is, the red light and the green light emitted by the red sub-pixel and the green sub-pixel are excitation light generated by exciting the quantum dot, and the blue light emitted by the backlight module can be directly emitted by the blue sub-pixel to display blue, so as to provide three primary colors of red, green and blue required for color display, and achieve color display, however, since the blue sub-pixel does not need to generate blue light by exciting the quantum dot, the viewing angle optical characteristic of blue displayed by the blue sub-pixel should be more consistent with the viewing angle optical characteristic of blue light emitted by the non-quantum dot liquid crystal display, so that the actual luminance of the red-green light at a large viewing angle is higher than the luminance ratio of the blue light, therefore, the phenomenon that the display picture of the quantum dot liquid crystal display is yellow under a large visual angle can be caused.
In order to solve the above problems, the method for improving the yellow display frame of the quantum dot liquid crystal display of the present invention comprises:
setting the number ratio of the red sub-pixel, the green sub-pixel and the blue sub-pixel in each pixel unit as 1: 1: a, wherein a > 1; for each pixel unit, the brightness value corresponding to the original gray-scale signal G0 of the blue sub-pixel under the front view condition is obtained by the lookup table to be L0, and the actual gray-scale signals are respectively input to all the blue sub-pixels in the pixel unit, so that the sum of the brightness values of all the blue sub-pixels under the front view condition in each pixel unit is equal to L0.
It should be noted that, in the front view case, that is, in the case where the oblique viewing angle is 0 °, here, the original gray-scale signal G0 and the luminance value L0 can be regarded as the ratio of the number of red sub-pixels, green sub-pixels and blue sub-pixels in the liquid crystal display being 1: 1: the gray scale signal adopted by the blue sub-pixel at 1 and the corresponding brightness value under the front view condition.
Specifically, the actual gray scale signals respectively input to all the blue sub-pixels in a pixel unit may be the same or different, and preferably the same.
Further, the ratio of the number of the red sub-pixels, the number of the green sub-pixels and the number of the blue sub-pixels in each pixel unit is 1: 1: 2 as an example, the actual gray scale signals G1 and G2 of the two blue sub-pixels in each pixel unit are calculated according to the original gray scale signal G0 of the pixel unit, so that the sum of the luminance values L1 and L2 of the two blue sub-pixels in the pixel unit under the front view condition is equal to L0.
Referring to fig. 4, since the viewing angle optical characteristics of the blue sub-pixel should be more consistent with the viewing angle optical characteristics of the blue light emitted by the non-quantum dot lcd, the luminance gray scale diagram also has a region with a slow luminance rise of the middle gray scale and a region with a fast luminance rise of the high gray scale. When L1 and L2 correspond to 1/2 with the maximum front-view luminance, the actual gray-scale signals G1 and G2 of the two blue sub-pixels are both smaller than the original gray-scale signal G0, which is equivalent to reducing the actual gray-scale signals input by the two blue sub-pixels, whereas the luminance in 60 ° oblique-view corresponding to G1 and G2 is both greater than 1/2 of the front-view luminance, i.e. the sum of the luminance values of the two blue sub-pixels in 60 ° oblique-view is greater than the luminance value of one blue sub-pixel in 60 ° oblique-view corresponding to the original gray-scale signal G0, which is equivalent to realizing the improvement of the side-view luminance of the blue sub-pixels.
The method for improving the yellow display picture of the quantum dot liquid crystal display comprises the following steps of setting the number ratio of red sub-pixels, green sub-pixels and blue sub-pixels in each pixel unit as 1: 1: a, where a > 1, the brightness value corresponding to the original gray scale signal G0 of the blue sub-pixel obtained by looking up a table for each pixel unit under the front view condition is L0, and the actual gray scale signals are respectively input to all the blue sub-pixels in the pixel unit, so that the sum of the brightness values of all the blue sub-pixels in each pixel unit under the front view condition is equal to L0, that is, the actual gray scale signal input by a single blue sub-pixel is reduced while the total brightness of the blue sub-pixels under the front view direction is kept unchanged, thereby relatively increasing the total brightness of the blue sub-pixels under the oblique view direction, and further solving the problem that the display picture of the quantum dot liquid crystal display under the large viewing angle is yellow.
Based on the brightness adjustment method of the liquid crystal display, the invention further provides a quantum dot liquid crystal display, which comprises a backlight module and a quantum dot liquid crystal panel which are oppositely arranged, wherein the backlight module is used for providing a display light source for the quantum dot liquid crystal panel, the quantum dot liquid crystal panel comprises a plurality of pixel units which are arranged in an array, each pixel unit comprises a red sub-pixel, a green sub-pixel and a blue sub-pixel which are arranged in parallel, the red sub-pixel and the green sub-pixel both comprise quantum dot films, and the number ratio of the red sub-pixel, the green sub-pixel and the blue sub-pixel in each pixel unit is 1: 1: a, wherein a > 1; when the quantum dot liquid crystal display displays, the blue sub-pixel of each pixel unit has an original gray scale signal G0, the brightness value of the blue sub-pixel of the pixel unit corresponding to the original gray scale signal G0 under the front view condition is L0, and the sum of the brightness values of all the blue sub-pixels in each pixel unit under the front view condition is equal to L0 by respectively inputting the actual gray scale signals to all the blue sub-pixels in the pixel unit.
Specifically, the quantum dot liquid crystal display may adopt a design of a quantum dot polarizer, the quantum dots carried by the quantum dot liquid crystal display are arranged in the polarizer, the quantum dot film is arranged between the functional film layers of the polarizer, the quantum dot film and the functional film layers of the polarizer jointly form the quantum dot polarizer, the quantum dot films of the red sub-pixel and the green sub-pixel respectively contain the red quantum dot and the green quantum dot, or the quantum dot films of the red sub-pixel and the green sub-pixel both contain the mixed red quantum dot and green quantum dot.
In addition, the quantum dot liquid crystal display can also adopt a design of adopting a quantum dot color filter, quantum dots carried by the quantum dot color filter are arranged in the color filter, and quantum dot films of the red sub-pixel and the green sub-pixel respectively contain the red quantum dot and the green quantum dot.
Specifically, the backlight module is a blue light source.
Specifically, the blue sub-pixel comprises a transparent film which is in the same layer as the quantum dot film, and the transparent film and the quantum dot film in the same layer belong to a quantum dot color filter or a quantum dot polarizer.
According to the quantum dot liquid crystal display, the display brightness of the blue sub-pixel is adjusted by adopting the method, so that the problem that a display picture of the quantum dot liquid crystal display is yellow under a large visual angle can be solved.
In summary, in the method for improving the yellow display frame of the quantum dot liquid crystal display of the present invention, the number ratio of the red sub-pixel, the green sub-pixel and the blue sub-pixel in each pixel unit is set as 1: 1: a, where a > 1, the brightness value corresponding to the original gray scale signal G0 of the blue sub-pixel obtained by looking up a table for each pixel unit under the front view condition is L0, and the actual gray scale signals are respectively input to all the blue sub-pixels in the pixel unit, so that the sum of the brightness values of all the blue sub-pixels in each pixel unit under the front view condition is equal to L0, that is, the actual gray scale signal input by a single blue sub-pixel is reduced while the total brightness of the blue sub-pixels under the front view direction is kept unchanged, thereby relatively increasing the total brightness of the blue sub-pixels under the oblique view direction, and further solving the problem that the display picture of the quantum dot liquid crystal display under the large viewing angle is yellow. The quantum dot liquid crystal display adopts the method to adjust the display brightness of the blue sub-pixel, and can solve the problem that the display picture of the quantum dot liquid crystal display is yellow under a large visual angle.
As described above, it will be apparent to those skilled in the art that various other changes and modifications can be made based on the technical solution and the technical idea of the present invention, and all such changes and modifications should fall within the protective scope of the appended claims.
Claims (10)
1. The quantum dot liquid crystal display comprises a backlight module and a quantum dot liquid crystal panel which are oppositely arranged, wherein the backlight module is used for providing a display light source for the quantum dot liquid crystal panel, the quantum dot liquid crystal panel comprises a plurality of pixel units which are arranged in an array mode, each pixel unit comprises a red sub-pixel, a green sub-pixel and a blue sub-pixel which are arranged in parallel, the red sub-pixel and the green sub-pixel respectively comprise quantum dot films, and the quantum dot liquid crystal display is characterized in that the number ratio of the red sub-pixel, the green sub-pixel and the blue sub-pixel in each pixel unit is 1: 1: a, wherein a > 1; the method comprises the following steps:
for each pixel unit, the brightness value corresponding to the original gray-scale signal G0 of the blue sub-pixel under the front view condition is obtained by the lookup table to be L0, and the actual gray-scale signals are respectively input to all the blue sub-pixels in the pixel unit, so that the sum of the brightness values of all the blue sub-pixels under the front view condition in each pixel unit is equal to L0.
2. The method as claimed in claim 1, wherein the actual gray scale signals respectively inputted to all blue sub-pixels in a pixel unit are the same or different.
3. The method according to claim 1, wherein the ratio of the number of red sub-pixels, green sub-pixels and blue sub-pixels in each pixel unit is 1: 1: 2.
4. the utility model provides a quantum dot LCD, includes backlight unit and the quantum dot liquid crystal display panel of relative setting, backlight unit is used for providing the display light source to quantum dot liquid crystal display panel, quantum dot liquid crystal display panel includes the pixel unit of a plurality of array arrangements, and every pixel unit includes red subpixel, green subpixel and blue subpixel that parallel, red subpixel and green subpixel all include the quantum dot membrane, its characterized in that, in every pixel unit, the quantity ratio of red subpixel, green subpixel and blue subpixel is 1: 1: a, wherein a > 1; when displaying, the blue sub-pixel of each pixel unit has an original gray-scale signal G0, the luminance value of the blue sub-pixel of the pixel unit corresponding to the original gray-scale signal G0 under the front view condition is L0, and the sum of the luminance values of all the blue sub-pixels under the front view condition in each pixel unit is equal to L0 by inputting the actual gray-scale signals to all the blue sub-pixels in the pixel unit respectively.
5. The quantum dot liquid crystal display of claim 4, wherein the quantum dot film is a quantum dot polarizer.
6. The quantum dot liquid crystal display of claim 4, wherein the quantum dot film is a quantum dot color filter.
7. The quantum dot liquid crystal display of claim 4, wherein the backlight module is a blue light source.
8. The quantum dot liquid crystal display of claim 7, wherein the blue sub-pixel comprises a transparent film in a same layer as the quantum dot film.
9. The quantum dot liquid crystal display of claim 4, wherein the quantum dot films of the red and green sub-pixels contain red and green quantum dots, respectively.
10. The quantum dot liquid crystal display of claim 4, wherein the quantum dot films of the red and green sub-pixels each contain mixed red and green quantum dots.
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| CN111415961B (en) * | 2020-03-30 | 2022-04-26 | 深圳市华星光电半导体显示技术有限公司 | Pixel arrangement structure, organic electroluminescent device and display device |
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