CN110349543A - Liquid crystal display device and its luminance compensation method - Google Patents
Liquid crystal display device and its luminance compensation method Download PDFInfo
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- CN110349543A CN110349543A CN201910678309.9A CN201910678309A CN110349543A CN 110349543 A CN110349543 A CN 110349543A CN 201910678309 A CN201910678309 A CN 201910678309A CN 110349543 A CN110349543 A CN 110349543A
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- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 113
- 238000000034 method Methods 0.000 title claims abstract description 26
- 230000003287 optical effect Effects 0.000 claims abstract description 17
- 241001270131 Agaricus moelleri Species 0.000 claims description 13
- 238000013316 zoning Methods 0.000 abstract 1
- 238000002834 transmittance Methods 0.000 description 6
- 229920000642 polymer Polymers 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 239000002861 polymer material Substances 0.000 description 2
- 239000004983 Polymer Dispersed Liquid Crystal Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011982 device technology Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
Classifications
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- 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
- G09G3/3406—Control of illumination source
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- 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
- G09G3/3406—Control of illumination source
- G09G3/3413—Details of control of colour illumination sources
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- 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
- G09G3/3406—Control of illumination source
- G09G3/342—Control of illumination source using several illumination sources separately controlled corresponding to different display panel areas, e.g. along one dimension such as lines
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- 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
- G09G2320/02—Improving the quality of display appearance
- G09G2320/0233—Improving the luminance or brightness uniformity across the screen
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- Engineering & Computer Science (AREA)
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- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Liquid Crystal (AREA)
Abstract
A kind of liquid crystal display device and its luminance compensation method, the device include: display panel and backlight；Display panel includes: conventional viewing area and transparence display area；First light source and second light source are provided in backlight；Transparence display area is arranged in conventional viewing area, and the liquid crystal in transparence display area is different from the liquid crystal in conventional viewing area；The utility model has the advantages that firstly, by the way that transparence display area is arranged in display panel, in the case where not making abnormity cutting to screen, realize that transparence display and picture showed freely converts；Secondly, transparence display zoning is divided into several zonules, brightness value of the conventional viewing area under different grayscale is measured using optical measuring instrument to measure, brightness value of several zonules different in transparence display area under different grayscale is measured again, value measured by the two is compared, it calculates its luminance difference and compensates, can effectively solve the problems, such as that local luminance is uneven in the transparence display area of liquid crystal display device.
Description
Technical Field
The present disclosure relates to display technologies, and in particular, to a liquid crystal display device and a brightness compensation method thereof.
Background
At present, with the increasing development of display technology, various technologies are emerging continuously, and 100% full-screen display is the development trend of the current screen display technology. In order to realize high screen ratio and ensure the lighting requirements of functional devices such as a camera and a light sensor, various design schemes for high screen ratio display are proposed, such as making a screen in a special-shaped cutting mode to reserve a lighting channel of the functional device, or making the functional device such as a front camera on an independent mechanical module as an independently controlled component, and the functional device is hidden in a machine body by default and pops up or slides out during working. Either of these two methods destroys the integrity of the screen or introduces new mechanical structures that make the screen more complex, neither of which really implements a 100% full screen.
Therefore, in the existing liquid crystal display device technology, the problems that the overall screen of the liquid crystal display device needs to be cut in a special shape, the overall screen display is not really realized, and the brightness display in the transparent display area is not uniform exist, and the improvement is urgently needed.
Disclosure of Invention
The application relates to a liquid crystal display device and a brightness compensation method thereof, which are used for solving the problems that the overall screen of the liquid crystal display device needs to be cut in a special shape, the overall screen display is not really realized and the brightness in a transparent display area is not uniform in the prior art.
In order to solve the above problems, the technical solution provided by the present application is as follows:
the application provides a liquid crystal display device, includes: a display panel and a backlight panel; wherein,
the display panel includes: the display device comprises a conventional display area and a transparent display area, wherein the conventional display area is arranged in the transparent display area in a surrounding manner;
the backlight plate is provided with: a first light source and a second light source; the first light source is arranged corresponding to the transparent display area and used for providing light source for the transparent display area to realize transparent area picture display; the second light source is arranged corresponding to the regular display area and used for providing light source for the regular display area.
According to a preferred embodiment provided by the present application, the non-display area includes: the first light source is a three-color light emitting diode, and the second light source is a white light emitting diode.
According to a preferred embodiment provided by the present application, the three-color light emitting diodes are divided into red light emitting diodes, blue light emitting diodes and green light emitting diodes.
According to a preferred embodiment provided by the present application, the area of the normal display area is larger than the area of the transparent display area.
According to a preferred embodiment provided by the present application, the regular display area is a first liquid crystal, the transparent display area is provided with a second liquid crystal, and the first liquid crystal is different from the second liquid crystal.
According to a preferred embodiment provided by the present application, the transparent display area includes a plurality of different sub-transparent display areas.
According to a preferred embodiment provided by the present application, the shape of the transparent display area is: circular, oval, triangular or rectangular.
The present application also provides a brightness compensation method of a liquid crystal display device, the liquid crystal display device including: display panel and backlight, display panel divide into: the method comprises the following steps of:
s10, providing an optical measuring instrument;
s20, measuring the brightness of the conventional display area under different gray scales by using the optical measuring instrument;
s30, measuring the brightness of each sub transparent display area under different gray scales by using the optical measuring instrument;
s40, comparing the brightness measured in the step S20 with the brightness measured in the step S30, and if no difference exists, not compensating; if the difference exists, calculating the brightness difference;
and S50, calculating the compensation voltage of the corresponding sub transparent display area according to the relation between the driving voltage of the liquid crystal display device driving circuit and the transmissivity of the liquid crystal layer.
According to a preferred embodiment provided by the present application, the optical measuring instrument is an optical colorimeter or a charge coupled device.
According to a preferred embodiment provided by the present application, the total brightness of the backlight panel is inversely proportional to the driving compensation voltage value.
Compared with the prior art, the liquid crystal display device and the brightness compensation method thereof have the following beneficial effects:
1. the transparent display area is arranged in the liquid crystal display device, so that the liquid crystal display device realizes free conversion of transparent display and picture display under the condition that the screen is not required to be cut in a special shape, and a 100% full-screen is really realized;
2. the application also provides a brightness compensation method of the liquid crystal display device, the transparent display area is divided into a plurality of sub-transparent display areas, the brightness values of the conventional display area under different gray scales are measured by using an optical measuring instrument, the brightness values of the sub-transparent display areas under different gray scales in the transparent display area are measured, the measured values of the sub-transparent display areas and the measured values of the sub-transparent display areas are compared, the brightness difference value is calculated, compensation is carried out, and the problem that local brightness in the transparent display area of the liquid crystal display device is uneven can be effectively solved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a front view of a liquid crystal display device provided in an embodiment of the present application.
Fig. 2 is a side view of a liquid crystal display device according to an embodiment of the present application.
Fig. 3 is a partially enlarged view of a transparent display area of a liquid crystal display device according to an embodiment of the present application.
Fig. 4 is a partially enlarged view of a sub-transparent display area of the lcd device according to an embodiment of the present disclosure.
Fig. 5 is a luminance curve diagram of the liquid crystal display device according to the embodiment of the present application at different gray scales.
Fig. 6 is a graph showing a relationship between a driving voltage and a transmittance of a liquid crystal layer of a driving circuit of a liquid crystal display device according to an embodiment of the present disclosure.
Fig. 7 is a flowchart illustrating a luminance compensation method of a liquid crystal display device according to an embodiment of the present disclosure.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be construed as limiting the present application. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.
The present application provides a liquid crystal display device and a brightness compensation method thereof, and particularly refer to fig. 1 to 7.
Fig. 1 is a front view of a liquid crystal display device according to an embodiment of the present application. The method comprises the following steps: a display panel 2 and a backlight 1, wherein the display panel 2 includes: a regular display area 21 and a transparent display area 22; the backlight plate 1 is provided with a first light source 11 (not shown in the figure) and a second light source 12; the first light source 11 is setting for the transparent display area 22, and is configured to provide a light source for the transparent display area 22 to implement transparent area image display; the second light source 12 is arranged opposite to the side of the normal display area 21, facing away from the transparent display area 22, for providing a light source to the normal display area 21. A backlight plate 1, a regular display area 21 and a transparent display area 22; the backlight plate 1 is arranged below the normal display area 21 and the transparent display area 22, and a first liquid crystal layer (not shown in the figure) is arranged in the normal display area 21 and is used for displaying pictures; a second liquid crystal layer (not shown) is disposed in the transparent display region 22 for transparent display or image display; the first liquid crystal layer is distinct from the second liquid crystal layer; the first liquid crystal layer and the second liquid crystal layer are both arranged above the backlight plate 1.
In the embodiments provided herein, the area of the regular display area 21 is larger than the area of the transparent display area 22, and the shape of the transparent display area 22 may be: circular, oval, triangular, rectangular, etc., and is not limited to the figures defined in the figures.
Referring to fig. 1 in detail, the backlight plate 1 is provided with the three-color light emitting diode 11 and the white light emitting diode 12; the three-color light emitting diode 11 is divided into: red light emitting diode 111, blue light emitting diode 112, and green light emitting diode 113. In the liquid crystal display device provided in the embodiments of the application, the white light emitting diode 12 is disposed at the bottom of the liquid crystal display device, just opposite to the normal display area 21; the three-color light emitting diodes (i.e., the red light emitting diode 111, the blue light emitting diode 112, and the green light emitting diode 113) are disposed on the top of the liquid crystal display device, just opposite to the transparent display region 22. The white light emitting diode 12 is used to provide a light source for the regular display area 21, and the three-color light emitting diode 11 is used to provide a light source for the transparent display area 22.
Specifically, the transparent display area 22 may be further divided into a plurality of different sub-transparent display areas 221, each sub-transparent display area 221 is driven by a plurality of pixel circuits, each pixel circuit is composed of a pixel unit, and the method includes: a thin film transistor 2211, a storage capacitor 2212 and a liquid crystal capacitor 2213, as detailed in fig. 3 and 4.
Fig. 2 is a side view of a liquid crystal display device according to an embodiment of the present disclosure. As can be seen, the liquid crystal display device includes: the backlight panel comprises a backlight panel 1, a conventional display area 21 and a transparent display area 22, wherein a white light emitting diode 12, a red light emitting diode 111, a blue light emitting diode 112 and a green light emitting diode 113 which are arranged on the backlight panel 1 are covered on the backlight panel 1. The thicknesses of the white light emitting diode 12, the red light emitting diode 111, the blue light emitting diode 112 and the green light emitting diode 113 are all smaller than the thickness of the normal display area or the transparent display area.
In the embodiment of the application, the first liquid crystal is arranged in the normal display area, and the first liquid crystal layer is a normal liquid crystal layer and is mainly used for deflecting a certain angle under the action of an electric field so as to normally display images and/or picture information; the second Liquid crystal layer is a scattering Liquid crystal, and the scattering Liquid crystal pdlc (polymer Dispersed Liquid crystal) is also called as: polymer Network Liquid crystal pnlc (polymer Network Liquid crystal). The thickness of the scattering-type liquid crystal is related to the characteristics of the material, and generally, the thickness of the scattering-type liquid crystal of different materials is different. In general, the thicker the scattering-type liquid crystal layer is, the poorer the transmittance thereof is, but the higher the contrast is; the thinner the scattering-type liquid crystal layer is, the better the transmittance thereof is, but the lower the contrast is relatively. Therefore, the thickness range of the scattering-type liquid crystal layer is set as follows: 5-40 um, then can be relatively higher on the basis of guaranteeing the transmittance. Since the scattering type liquid crystal includes a polymer material and has a different refractive index from a general liquid crystal, the scattering type liquid crystal has the same anisotropy in dielectric constant between a liquid crystal layer and a polymer layer. Existing scattering-type liquid crystals are generally classified into two types: one is reversible scattering type liquid crystal, when no voltage exists or the applied voltage value is lower than the threshold voltage of the scattering type liquid crystal, liquid crystal molecules are horizontally arranged, and the polymer material in the scattering type liquid crystal has no refractive index difference, so that refraction cannot occur, and the scattering type liquid crystal is in a transparent state; when the applied voltage value is higher than the threshold voltage value of the scattering liquid crystal, liquid crystal molecules rotate and are arranged along the vertical direction, so that the anisotropic property of the dielectric constant of the liquid crystal is changed, and therefore, the polymer surface of the scattering liquid crystal generates refractive index difference, and light rays generate refraction phenomenon at the position to present a fog state, namely a picture display state; the second is normal scattering liquid crystal, which is in a foggy state, i.e. a picture display state, when no voltage is applied or the applied voltage value is lower than the threshold voltage of the scattering liquid crystal; when the applied voltage value exceeds the threshold voltage of the scattering type liquid crystal, it assumes a transparent state. Both of the scattering-type liquid crystals described above can be used as a material in the transparent display region of the liquid crystal display device provided in the embodiments of the present application. In summary, the transparent display is: the second liquid crystal is arranged in the transparent display area, is a scattering liquid crystal added with polymers, and is driven by voltage to refract light rays to different degrees, so that a transparent display state or a picture display state is realized. The liquid crystal display device provided by the application has the main purpose that the transparent display area is arranged in the liquid crystal display device, so that the position for arranging a functional device, such as a camera and the like, is reserved under the condition that a screen is not cut in a special shape. When the picture is not taken, the transparent display area 22 is used for displaying pictures, and the liquid crystal display device can realize full-screen display; when taking a picture, the transparent display area 22 is used as a transparent display, and the corresponding function of the camera is started.
Since the transparent display region 22 needs to realize image display by laterally injecting light of the three-color led 11 carrying display signals into the liquid crystal layer and then scattering the light by liquid crystal molecules, the light incident on the three-color led 11 of the transparent display region 22 may have a problem of non-uniform energy due to the influence of layout, for example, at an end close to the three-color led 11, the brightness of the transparent display region 22 may be brighter, and at an end far from the three-color led 11, the brightness of the transparent display region 22 may be relatively darker.
Therefore, the present application also proposes a method for compensating the brightness of the lcd device, aiming at the uneven brightness of the screen in the transparent display area of the lcd device, so that the overall display brightness of the transparent display area 22 is consistent with the brightness of the regular display area 21 in the screen display state.
Referring to fig. 7, the method for compensating the brightness of the liquid crystal display device is as follows: firstly, providing an optical measuring instrument, wherein the optical measuring instrument can be an optical colorimeter or a Charge Coupled Device (CCD); then, the brightness of the regular display area 21 at different gray scales is measured by the optical measuring instrument, and a gamma curve L ═ Γ (gl) between the gray scales and the brightness is plotted, where L is the brightness and gl is the gray scale, as shown in fig. 5 in detail. Then, measuring the brightness of the sub-transparent display areas 221 under different gray scales, and drawing corresponding gamma curve graphs of the gray scales and the brightness; comparing the gamma curve graphs of the conventional display area and the gamma curve graphs of different sub-transparent display areas 221 measured in the last two steps, and comparing whether the brightness of the sub-transparent display areas is different; the relation is as follows: Δ Li,j＝Lmi,j-Γ(gli) Wherein, gliIs the ith order gray scale value, Δ Li,jExpressing the difference between the luminance of the jth sub-transparent display area at the ith gray level and the conventional display area at the same gray level, Lmi,jThe measured value of the ith gray scale of the jth sub transparent display area is obtained; and then according to the relation between the driving voltage of the liquid crystal display device driving circuit and the liquid crystal layer transmittance: where T is the transmittance and V is the driving voltage of the pixel, δ (V) can be obtained: Δ Li,j＝A0*δ(ΔVi,j) Wherein A is0Is the total brightness, Δ V, of the backlighti,jIn order to drive the compensation voltage value, it can be seen from the above formula that the total brightness of the backlight panel is inversely proportional to the driving compensation voltage value. See figure 6 for details.
The compensation voltage for obtaining the ith gray scale of the jth block region by the above formula is:after the voltage of each pixel in the jth sub-transparent display area is complemented in sequence by the method, the voltage compensation is performed on the other sub-transparent display areas 221 by the method, so that the total measurement of the transparent display area 22 in the ith gray scale is obtained as follows:wherein i is 0,1,2, …, 255.
Similarly, the above-described method of compensating the luminance of the liquid crystal display device can adjust not only the problem of the luminance unevenness of the transparent display area 22 in the liquid crystal display device but also the problem of the luminance unevenness of the regular display area 21 in the liquid crystal display device.
Therefore, compared with the prior art, the liquid crystal display device and the brightness compensation method thereof provided by the application have the beneficial effects that: firstly, the transparent display area 22 is arranged in the liquid crystal display device, so that the liquid crystal display device realizes free conversion between transparent display and picture display under the condition that the screen is not required to be subjected to special-shaped cutting, and a 100% full-screen is really realized; secondly, the application also provides a brightness compensation method of the liquid crystal display device, the transparent display area 22 is divided into a plurality of small areas (namely, sub-transparent display areas 221), an optical measuring instrument is firstly used for measuring the brightness values of the conventional display area 21 under different gray scales, then the brightness values of the sub-transparent display areas 221 under different gray scales in the transparent display area 22 are measured, the measured values of the two are compared, the brightness difference value is calculated and compensated, and the problem of local uneven brightness in the transparent display area of the liquid crystal display device can be effectively solved.
The liquid crystal display device and the brightness compensation method thereof provided by the embodiments of the present application are described in detail above, and the principles and embodiments of the present application are explained herein by applying specific examples, and the description of the above embodiments is only used to help understanding the technical solutions and the core ideas of the present application; those of ordinary skill in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications or substitutions do not depart from the spirit and scope of the present disclosure as defined by the appended claims.
Claims (10)
1. A liquid crystal display device, comprising: a display panel and a backlight panel; wherein the display panel includes: the display device comprises a conventional display area and a transparent display area, wherein the conventional display area is arranged in the transparent display area in a surrounding manner;
the backlight plate is provided with: the first light source is arranged corresponding to the transparent display area and used for providing light source for the transparent display area to realize transparent area picture display; the second light source is arranged corresponding to the regular display area and used for providing light source for the regular display area.
2. The liquid crystal display device according to claim 1, wherein the first light source is a three-color light emitting diode, and the second light source is a white light emitting diode.
3. The liquid crystal display device according to claim 2, wherein the three-color light emitting diodes are divided into a red light emitting diode, a blue light emitting diode, and a green light emitting diode.
4. The liquid crystal display device according to claim 1, wherein an area of the normal display region is larger than an area of the transparent display region.
5. The liquid crystal display device according to claim 4, wherein the normal display region is provided with a first liquid crystal, and the transparent display region is provided with a second liquid crystal, and the first liquid crystal is different from the second liquid crystal.
6. The liquid crystal display device according to claim 5, wherein the transparent display area comprises a plurality of different sub transparent display areas.
7. The liquid crystal display device according to claim 6, wherein the transparent display region has a shape of: circular, oval, triangular or rectangular.
8. A method for compensating brightness of a liquid crystal display device, the liquid crystal display device comprising: display panel and backlight, display panel divide into: the method comprises the following steps of:
s10, providing an optical measuring instrument;
s20, measuring the brightness of the conventional display area under different gray scales by using the optical measuring instrument;
s30, measuring the brightness of each sub transparent display area under different gray scales by using the optical measuring instrument;
s40, comparing the brightness measured in the step S20 with the brightness measured in the step S30, and if no difference exists, not compensating; if the difference exists, calculating the brightness difference;
and S50, calculating the compensation voltage of the corresponding sub transparent display area according to the relation between the driving voltage of the liquid crystal display device driving circuit and the transmissivity of the liquid crystal layer.
9. The luminance compensation method of the liquid crystal display device of claim 8, wherein the optical measuring instrument is an optical colorimeter or a charge coupled device.
10. The method of claim 8, wherein the total brightness of the backlight panel is inversely proportional to the driving compensation voltage.
Priority Applications (2)
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| CN201910678309.9A CN110349543A (en) | 2019-07-25 | 2019-07-25 | Liquid crystal display device and its luminance compensation method |
| PCT/CN2019/112719 WO2021012431A1 (en) | 2019-07-25 | 2019-10-23 | Liquid crystal display apparatus and brightness compensation method therefor |
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| CN201910678309.9A CN110349543A (en) | 2019-07-25 | 2019-07-25 | Liquid crystal display device and its luminance compensation method |
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| CN111221168A (en) * | 2020-03-10 | 2020-06-02 | 厦门天马微电子有限公司 | Display module and control method thereof |
| CN111624814A (en) * | 2020-06-15 | 2020-09-04 | 武汉华星光电技术有限公司 | Display device and display optimization method |
| WO2021012431A1 (en) * | 2019-07-25 | 2021-01-28 | 武汉华星光电技术有限公司 | Liquid crystal display apparatus and brightness compensation method therefor |
| US11067853B1 (en) | 2020-06-15 | 2021-07-20 | Wuhan China Star Optoelectronics Technology Co., Ltd. | Display device and display optimization method |
| CN113963671A (en) * | 2020-07-21 | 2022-01-21 | Oppo广东移动通信有限公司 | Display method, terminal and storage medium |
| CN113963658A (en) * | 2020-07-21 | 2022-01-21 | Oppo广东移动通信有限公司 | Brightness compensation method, brightness data determination method, device and chip |
| WO2022016976A1 (en) * | 2020-07-24 | 2022-01-27 | 昆山国显光电有限公司 | Method and device for determining compensation parameters of display panel |
| US11741879B2 (en) | 2020-07-29 | 2023-08-29 | Kunshan New Flat Panel Display Technology Center Co., Ltd. | Method, device and apparatus for brightness compensation of display panel |
| US11881145B2 (en) | 2020-07-29 | 2024-01-23 | Kunshan New Flat Panel Display Technology Center Co., Ltd. | Method, device and apparatus for determining brightness compensation parameter |
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