CN116400533A - Display device - Google Patents

Display device Download PDF

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Publication number
CN116400533A
CN116400533A CN202310332998.4A CN202310332998A CN116400533A CN 116400533 A CN116400533 A CN 116400533A CN 202310332998 A CN202310332998 A CN 202310332998A CN 116400533 A CN116400533 A CN 116400533A
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CN
China
Prior art keywords
light
area
display panel
guide plate
display
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
Application number
CN202310332998.4A
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Chinese (zh)
Inventor
罗菲
康报虹
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HKC Co Ltd
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HKC Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by HKC Co Ltd filed Critical HKC Co Ltd
Priority to CN202310332998.4A priority Critical patent/CN116400533A/en
Publication of CN116400533A publication Critical patent/CN116400533A/en
Pending legal-status Critical Current

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    • 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
    • G02F1/1336—Illuminating devices
    • G02F1/133615—Edge-illuminating devices, i.e. illuminating from the side
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/0036—2-D arrangement of prisms, protrusions, indentations or roughened surfaces
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/0038—Linear indentations or grooves, e.g. arc-shaped grooves or meandering grooves, extending over the full length or width of the light guide
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
    • G02B6/0051—Diffusing sheet or layer
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/0058—Means for improving the coupling-out of light from the light guide varying in density, size, shape or depth along the light guide

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

The application discloses a display device, mainly relates to the technical field of display, and comprises a display panel, a driving chip and a backlight module, wherein the display panel is oppositely arranged with the backlight module, and the backlight module provides backlight for the display panel; the display panel comprises a display area and a non-display area, wherein the non-display area is arranged around the display area, and the driving chip is bound on the display panel and is positioned in the non-display area; the backlight module comprises a back plate, a light source and a light guide plate, wherein the light guide plate and the light source are arranged on the back plate, the light source faces the side face of the light guide plate, and the light guide plate is positioned between the display panel and the back plate; the display area of the display panel comprises a deformation area and a non-deformation area, the light guide plate is provided with a light filtering part corresponding to the deformation area, and the light filtering part reduces light rays irradiated to the deformation area. Through the design, the light filtering part can reduce the light irradiated to the deformation area, so that the problem of light leakage of the deformation area is relieved.

Description

Display device
Technical Field
The application relates to the technical field of display, in particular to a display device.
Background
In recent years, due to rapid development of electronic and information industries, related products thereof are increasingly precise. Portability of display panels is also becoming an important area of development in the industry. Therefore, COG (Chip On Glass) technology, i.e., technology of binding a driving Chip (Integrated Circuit) to an array substrate, is also developed. The process of binding the driving chip on the array substrate needs heating and stamping, which can cause bending deformation of the substrate in the process of binding the driving chip on the array substrate, and the substrate is eventually bent towards one side of the driving chip due to different expansion rates of the driving chip and the substrate, so that liquid crystal deflection disorder is caused, and light leakage phenomenon of the display panel is caused.
The general solution adopts a direct type backlight module and adopts a local dimming technology to adjust the brightness of the lamp beads corresponding to the deformation area of the display panel, but the mode can cause the phenomenon that the brightness of a larger area of the display panel is uneven.
Disclosure of Invention
The purpose of this application is to provide a display device, compensates the light inflow of display panel deformation region, alleviates display panel's light leak problem, prevents that display panel luminance from being inhomogeneous, promotes the display effect.
The application discloses a display device, which comprises a display panel, a driving chip and a backlight module, wherein the display panel is oppositely arranged with the backlight module, and the backlight module provides backlight for the display panel; the display panel comprises a display area and a non-display area, the non-display area is arranged around the display area, and the driving chip is bound on the display panel and is positioned in the non-display area; the backlight module comprises a back plate, a light source and a light guide plate, wherein the light guide plate and the light source are arranged on the back plate, the light source faces the side face of the light guide plate, and the light guide plate is positioned between the display panel and the back plate; the display area of the display panel comprises a deformation area and a non-deformation area, the light guide plate is provided with a light filtering part corresponding to the deformation area, and the light filtering part reduces light rays irradiated to the deformation area.
Optionally, the orthographic projection of the light filtering portion on the display panel covers the deformation area, and the orthographic projection area of the light filtering portion on the display panel is larger than the area of the deformation area, the light filtering portion includes a plurality of sleeved annular grooves, and the circle center of the annular grooves corresponds to the center of the deformation area.
Optionally, the cross section of the annular groove is V-shaped, the direction in which the center of the circle extends outwards is taken as a first direction, and along the first direction, the plurality of annular grooves are sleeved, and the width of the notch of each annular groove is gradually increased.
Optionally, the depth of the annular groove is 50-60 μm, and the notch width of the annular groove is 100-120 μm.
Optionally, the backlight module further comprises optical cement, and the optical cement is filled in the annular groove.
Optionally, the backlight module further includes a first diffusion plate, where the first diffusion plate is disposed on a side of the light guide plate away from the back plate, and the first diffusion plate completely covers the light guide plate, and the first diffusion layer includes a protection layer and a diffusion layer that are stacked, and the diffusion layer is located on a side of the protection layer away from the light guide plate; the diffusion layer comprises a plurality of diffusion particles, and the density of the diffusion particles at the deformation region corresponding to the diffusion layer is larger than the density of the diffusion particles at other regions corresponding to the diffusion layer.
Optionally, the light guide plate includes main part and protruding portion, protruding portion sets up main part orientation one side of display panel, protruding portion corresponds display panel's the deformation area, the one side of protruding portion deviating from main part is arc, the optical filter portion sets up protruding portion surface.
Optionally, the lamp source includes a plurality of lamp pearls, the backplate includes mainboard and curb plate, the curb plate sets up the edge of mainboard, the light guide plate sets up on the mainboard, a plurality of lamp pearls interval set up on the curb plate, and towards the light guide plate, just filtering portion is located adjacent two on the symmetry axis of lamp pearl, and is located adjacent two the intersection that the lamp pearl shines the region.
Optionally, the optical filtering part comprises a plurality of sleeved annular areas, and the direction of outwards extending the circle center of the annular areas is taken as a second direction; and a plurality of ink points are arranged in each annular area, and the areas of the ink points in the annular areas gradually decrease along the second direction.
Optionally, the optical filtering part comprises a plurality of sleeved annular areas, and the direction of outwards extending the circle center of the annular areas is taken as a second direction; and a plurality of ink points are arranged in each annular area, the areas of the ink points are equal, and the density of the ink points in the annular area gradually decreases along the second direction.
Compared with the scheme that the direct type backlight module is adopted, and the light leakage problem of the deformation area is relieved by adjusting the brightness of the lamp beads corresponding to the deformation area, the light filtering part is arranged at the position of the deformation area corresponding to the light guide plate, so that the light irradiated to the deformation area can be reduced by the light filtering part, the light leakage problem of the deformation area is relieved, the type of the backlight module is not required to be changed, and the side-in type backlight module with lower cost can be adopted; and the area that a direct type backlight unit lamp pearl corresponds is great, and the area that appears deformation region is less, and the area of light leak can then be less, and the luminance and the peripheral region difference in a great region can not appear in the scheme of this application to lead to display panel, improves display panel's display uniformity.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the principles of the application. It is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained from these drawings without inventive faculty for a person skilled in the art. In the drawings:
FIG. 1 is a schematic diagram of a first display device according to an embodiment of the present application;
FIG. 2 is a schematic cross-sectional view of a filter according to a first embodiment of the present application;
fig. 3 is a schematic plan view of a filter according to a first embodiment of the present application;
fig. 4 is a schematic view of a light guide plate according to a first embodiment of the present application;
FIG. 5 is a schematic cross-sectional view of a first diffuser plate according to a first embodiment of the present application;
FIG. 6 is a schematic view of a second diffuser plate according to a first embodiment of the present application;
fig. 7 is a schematic diagram of a backlight module according to a first embodiment of the present application;
FIG. 8 is a schematic view of a reinforcing structure of a first embodiment of the present application;
FIG. 9 is an exploded schematic view of a reinforcing structure of a first embodiment of the present application;
fig. 10 is a schematic view of a first filtering portion according to a second embodiment of the present application;
fig. 11 is a schematic view of a second filter according to a second embodiment of the present application.
10, a display device; 11. a driving chip; 20. a display panel; 21. an array substrate; 22. a liquid crystal; 23. a color film substrate; 24. a deformation region; 25. a non-deformed region; 200. a substrate; 210. a substrate main body portion; 220. a second abutting structure; 221. a fourth face; 222. a fifth surface; 223. a sixth face; 224. a second left abutting structure; 225. a second right abutting structure; 226. a groove; 227. an active switching layer; 300. a backlight module; 310. a back plate; 311. a main board; 312. a side plate; 320. a light source; 321. a lamp bead; 330. a light guide plate; 331. a main body portion; 332. a protruding portion; 333. a light filtering part; 334. an annular groove; 410. a first diffusion plate; 420. a second diffusion plate; 431. a protective layer; 432. a diffusion layer; 433. diffusing the particles; 500. a reinforcing structure; 510. reinforcing the main body portion; 520. a first abutting structure; 531. a first face; 532. a second face; 533. a third face; 541. a first left abutting structure; 542. a first right abutment; 610. an annular region; 620. ink dots.
Detailed Description
It should be understood that the terminology, specific structural and functional details disclosed herein are merely representative for purposes of describing particular embodiments, but that the application may be embodied in many alternate forms and should not be construed as limited to only the embodiments set forth herein.
In the description of the present application, the terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating relative importance or implicitly indicating the number of technical features indicated. Thus, unless otherwise indicated, features defining "first", "second" may include one or more such features either explicitly or implicitly; the meaning of "plurality" is two or more. The terms "comprises," "comprising," and any variations thereof, are intended to cover a non-exclusive inclusion, such that one or more other features, integers, steps, operations, elements, components, and/or groups thereof may be present or added.
In addition, terms of the azimuth or positional relationship indicated by "center", "lateral", "upper", "lower", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., are described based on the azimuth or relative positional relationship shown in the drawings, are merely for convenience of description of the present application, and do not indicate that the apparatus or element referred to must have a specific azimuth, be configured and operated in a specific azimuth, and thus should not be construed as limiting the present application.
Furthermore, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; either directly or indirectly through intermediaries, or in communication with each other. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.
The present application is described in detail below with reference to the attached drawings and alternative embodiments.
Fig. 1 is a schematic diagram of a first display device according to an embodiment of the present application, as shown in fig. 1, the present application discloses a display device 10, where the display device 10 includes a display panel 20, a driving chip 11 and a backlight module 300, the display panel 20 is disposed opposite to the backlight module 300, and the backlight module 300 provides backlight for the display panel 20. The display panel 20 includes a display area and a non-display area, the non-display area is disposed around the display area, and the driving chip 11 is bound to the display panel 20 and is located in the non-display area.
The backlight module 300 includes a back plate 310, a light source 320 and a light guide plate 330, wherein the light guide plate 330 and the light source 320 are both disposed on the back plate 310, the light source 320 faces the side surface of the light guide plate 330, and the light guide plate 330 is located between the display panel 20 and the back plate 310; the display area of the display panel 20 includes a deformed area 24 and a non-deformed area 25, the deformed area 24 corresponds to the binding area of the driving chip 11, and the non-deformed area 25 is an area of the display area except for the deformed area 24. The front projection of the binding area of the driving chip 11 on the display panel is larger than the front projection of the driving chip 11 on the display panel, the area of the deformation area 24 is not smaller than the area of the driving chip 11, the light guide plate 330 is provided with a light filtering part 333 corresponding to the deformation area 24, and the light filtering part 333 can reduce the light irradiated to the deformation area 24.
The display panel 20 includes an array substrate 21, a liquid crystal 22, and a color film substrate 23, the array substrate 21 and the color film substrate 23 are oppositely disposed, the liquid crystal 22 is disposed between the array substrate 21 and the color film substrate 23, and the driving chip 11 is bound on the array substrate 21.
After the driving chip 11 is bound to the display panel 20, the bending deformation phenomenon of the array substrate 21 is caused, and although the driving chip 11 is bound to the array substrate 21 corresponding to the non-display area of the display panel 20, the bending deformation is extended to the display area of the display panel 20 of the array substrate 21, so that the bending deformation is caused in the display area of the display panel 20 corresponding to the array substrate 21, and the position corresponding to the driving chip 11 is also generated, namely, the position of the deformation area 24.
At the deformation region 24, the deflection of the liquid crystal 22 between the array substrate 21 and the color film substrate 23 may be disturbed, so that the brightness of the deformation region 24 is greater than the brightness of the non-deformation region 25 at the same gray scale, and the display panel 20 may leak light.
In this application, the number of the deformation regions 24 includes two driving chips 11, which are strip-shaped, and correspond to two ends of the driving chip 11, so that the number of the filter parts 333 also includes two, which correspond to the deformation regions 24 one by one.
The present application sets up the filter 333 in the position of the deformation region 24 corresponding to the light guide plate 330, and the filter 333 can reduce the light irradiated to the deformation region 24, thereby alleviating the problem of light leakage in the deformation region 24.
Compared with the scheme of adopting the direct type backlight module 300 and relieving the light leakage problem of the deformation area 24 by adjusting the brightness of the lamp beads 321 corresponding to the deformation area 24, the type of the backlight module 300 is not required to be changed, and the side-in type backlight module 300 with lower cost can be adopted; and the area corresponding to one lamp bead 321 of the direct type backlight module 300 is larger, the area where the deformation area 24 appears is smaller, and the area where light leakage occurs is smaller, so that the scheme of adjusting the brightness of the lamp bead 321 corresponding to the deformation area 24 is adopted, although the problem of light leakage of the deformation area 24 can be relieved, the brightness of a larger area and the peripheral area of the display panel 20 are different, and the display panel 20 is unevenly displayed.
In addition, the scheme of the application does not need to change the equipment parameters when the driving chip 11 is bound, so that the situation that the display panel 20 is bent is relieved, and the binding reliability of the driving chip 11 and the array substrate 21 is ensured.
Example 1:
fig. 2 is an enlarged schematic cross-sectional view of a first filtering portion according to a first embodiment of the present application, and fig. 3 is a schematic plan view of the first filtering portion according to the first embodiment of the present application, and, with reference to fig. 2 to 3, a direction indicated by an arrow a in the drawing indicates a first direction, a dotted line corresponds to a center of the deformation region 24, an orthographic projection of the filtering portion 333 on the display panel 20 covers the deformation region 24, and an orthographic projection area of the filtering portion 333 on the display panel 20 is larger than an area of the deformation region 24, so that the filtering portion 333 can completely cover light leakage of the deformation region 24, and a problem of an aperture is avoided.
The filter 333 in this embodiment includes a plurality of sleeved annular grooves 334, and the center of the annular grooves 334 corresponds to the center of the deformation region 24.
When the light irradiates the deformation region 24 through the annular groove 334, multiple refraction occurs in the wall of the groove 226, and a part of the light is consumed in the refraction process, so that the intensity of the light is reduced. The cross section of the annular groove 334 may be U-shaped or V-shaped, and the cross section of the annular groove 334 is mainly described as a V-shape in this embodiment.
And, since the light leakage of the deformed region 24 is particularly represented by the phenomenon that the brightness of the middle is higher and the brightness beside the bright is lower, that is, the light leakage region in a circular shape appears in the display panel 20 corresponding to the deformed region 24, the brightness of the light at the center of the circle is higher, the brightness gradually decreases along the direction of extending the radius, and the brightness of the circular edge is consistent with that of other regions of the display panel 20.
Therefore, the direction in which the center of the circle extends outwards is taken as a first direction, and along the first direction, the plurality of annular grooves 334 are sleeved, and the width of the notch of each annular groove 334 is gradually increased. The width of the notch is understood to be the distance between the two peaks of the V-shape, the greater the width of the notch, the wider the annular groove 334; the smaller the width of the slot, the narrower the annular recess 334.
The smaller the slot width of the annular groove 334, the more times the light is refracted in the annular groove 334 as it passes through the annular groove 334, resulting in weaker intensity of the outgoing light and darker area corresponding to the display panel 20; the greater the width of the notch of the annular groove 334, the fewer the number of times the light is refracted in the annular groove 334 as it passes through the annular groove 334, the stronger the intensity of the light, and the brighter the area corresponding to the display panel 20. So that the light passing through the filter 333 tends to be darker in the middle and lighter in the sides, so as to compensate for the problem of darker light leakage in the middle and lighter sides of the deformed region 24.
Too deep annular groove 334 can lead to the abnormal penetration of light, too shallow groove 226 can lead to the failure of better light attenuation, too narrow notch of annular groove 334 can lead to the failure of normal penetration of light, too wide notch of groove 226 can lead to the failure of better light attenuation, therefore, through experiments in this application, the depth of annular groove 334 is set to be 50-60 μm; the notch width of the annular groove 334 is set to 100 μm to 120 μm. So that the light leakage of the deformed region 24 can be well compensated.
The annular groove 334 may be filled with an optical cement to further weaken the intensity of the light transmitted through the filter 333, and prevent the entry of impurities into the annular groove 334, thereby affecting the propagation of the light.
It is of course also possible that the width of the notch of each annular groove 334 is uniform, and the groove depth of each annular groove 334 is gradually reduced along the first direction by a plurality of annular grooves 334 sleeved. Compared with the scheme that the width of the notch of the annular groove 334 gradually increases along the first direction, when the groove is formed, the grooving depth of different annular grooves 334 is only required to be adjusted, and grooving equipment with different widths is not required to be replaced.
Alternatively, along the first direction, a plurality of the annular grooves 334 are sleeved, the groove depth of each annular groove 334 is gradually reduced, and the width of the notch of each annular groove 334 is gradually increased. For the scheme that the width of the notch of the annular groove 334 gradually increases along the first direction and the width of the notch of each annular groove 334 are consistent, along the first direction, a plurality of annular grooves 334 are sleeved, and the depth of each annular groove 334 gradually decreases, the light weakening effect of the scheme is better, and the light leakage compensation effect of the deformation area 24 is better.
Fig. 4 is a schematic view of a light guide plate according to a first embodiment of the present application, as shown in fig. 4, the light guide plate 330 includes a main body 331 and a protrusion 332, the protrusion 332 is disposed on a side of the main body 331 facing the display panel 20, the protrusion 332 corresponds to the deformation region 24 of the display panel 20, a surface of the protrusion 332 facing away from the main body 331 is arc-shaped, and the filter 333 is disposed on a surface of the protrusion 332. The light intensity passing through the filter 333 can be further weakened by the light scattering effect of the protrusion 332.
Still further, an annular groove 334 may be provided on a surface of the protrusion 332, and a plurality of the annular grooves 334 may be sleeved along the first direction, the groove depth of each annular groove 334 may be gradually reduced, and the width of the notch of each annular groove 334 may be gradually increased. Ensuring that light passing through the protrusion 332 will tend to be darker in the middle and brighter toward the sides.
Fig. 5 is a schematic cross-sectional view of a first diffusion plate according to a first embodiment of the present application, as shown in fig. 5, in which a direction indicated by an arrow a indicates a first direction, a dotted line corresponds to a center of the deformation region 24, and light can be irradiated onto the deformation region 24 through the first diffusion plate 410 after passing through the filter 333, so as to prevent the diffusion effect of the first diffusion plate 410 from changing the light distribution condition of the light passing through the filter 333, and the diffusion layer 432 in the first diffusion plate 410 is further modified in this embodiment.
The first diffusion plate 410 is disposed on a side of the light guide plate 330 facing away from the back plate 310, and the first diffusion plate 410 completely covers the light guide plate 330, the first diffusion layer 432 includes a protective layer 431 and a diffusion layer 432 stacked together, and the diffusion layer 432 is disposed on a side of the protective layer 431 facing away from the light guide plate 330. The diffusion layer 432 includes a plurality of diffusion particles 433, and the density of the diffusion particles 433 at the deformation region 24 corresponding to the diffusion layer 432 is greater than the density of the diffusion particles 433 at other regions corresponding to the diffusion layer 432, and the density of the diffusion particles 433 of the diffusion layer 432 gradually decreases along the first direction corresponding to the position of the deformation region 24.
The diffusion particles 433 diffuse light to other regions, so that the density of the diffusion particles 433 at the deformation region 24 corresponding to the diffusion layer 432 is increased, and the light transmitted through the filter 333 can be further reduced, thereby better solving the problem of light leakage of the deformation region 24.
Fig. 6 is a schematic diagram of a second diffusion plate according to the first embodiment of the present application, as shown in fig. 6, the backlight module 300 further includes a second diffusion plate 420, the second diffusion plate 420 is disposed on a side of the display panel 20 facing away from the back plate 310, and the second diffusion plate 420 corresponds to the deformation region 24 only, the second diffusion layer 432 includes a stacked protection layer 431 and a diffusion layer 432, and the diffusion layer 432 is located on a side of the protection layer 431 facing away from the light guide plate 330; the diffusion layer 432 includes a plurality of diffusion particles 433, and the diffusion particles 433 have a density greater than the diffusion particles 433 in other regions at the deformation region 24 of the diffusion layer 432.
The array substrate 21 comprises a substrate 200 and an active switch layer 227, the active switch layer 227 is arranged on one side of the substrate 200 facing the color film substrate 23, the driving chip 11 is bound on one side of the active switch layer 227 facing away from the substrate 200, a groove 226 is arranged on one side of the substrate 200 facing the backlight module 300, the cross section of the groove 226 is in an inverted trapezoid shape, the cross section of the second diffusion plate 420 is in an inverted trapezoid shape and is matched with the shape of the groove 226, the second diffusion plate 420 is embedded in the groove 226, the side face of the second diffusion plate 420 is attached to the wall of the groove 226, the bottom face of the second diffusion plate 420 is attached to the bottom of the groove 226, and the top face of the second diffusion plate 420 is flush with the notch of the groove 226. And the area of the second diffusion plate 420 is larger than the area of the deformation region 24. Thereby weakening the light entering the deformation region 24 again and improving the compensation effect on light leakage. The second diffusion plate 420 and the deformation region 24 can be positioned in real time, and a reverse acting force can be generated on the bending of the substrate 200, so that a certain correction effect can be achieved.
Fig. 7 is a schematic diagram of a backlight module according to a first embodiment of the present application, as shown in fig. 7, the light source 320 includes a plurality of light beads 321, the back plate 310 includes a main plate 311 and a side plate 312, the side plate 312 is disposed at an edge of the main plate 311, the light guide plate 330 is disposed on the main plate 311, the plurality of light beads 321 are disposed on the side plate 312 at intervals and face the light guide plate 330, and the light filtering portion 333 is disposed on a symmetry axis of two adjacent light beads 321 and is disposed at an intersection of two adjacent light bead 321 irradiation regions.
The intersection of the irradiation regions of two adjacent beads 321 can be also understood as a shadow region, where the light intensity is weaker than that of other positions, so that the light irradiated to the deformation region 24 can be weakened at the beginning, which is beneficial for the light filtering portion 333 to improve the light leakage problem of the deformation region 24.
Fig. 8 is a schematic diagram of a reinforcing structure according to the first embodiment of the present application, fig. 9 is an exploded schematic diagram of a reinforcing structure according to the first embodiment of the present application, and, in conjunction with fig. 8-9, arrow C in fig. 8 indicates a third direction, arrow D indicates a fourth direction, and a dotted line indicates a symmetry axis of the reinforcing body portion 510, the display device 10 further includes a reinforcing structure 500, the reinforcing structure 500 is disposed on a side of the substrate 200 away from the driving chip 11, and a projection of the reinforcing structure 500 on the substrate 200 covers the driving chip 11. The expansion rate of the reinforcing structure 500 is smaller than that of the substrate 200, that is, under the same condition, the degree of bending deformation of the reinforcing structure 500 is smaller than that of the substrate 200, so as to alleviate the bending problem of the array substrate 21 caused by the driving chip 11, and weaken the severity of light leakage in the deformed region 24.
The reinforcement structure 500 includes a reinforcement body 510 and a plurality of first abutment structures 520, wherein the plurality of first abutment structures 520 are disposed on a side of the reinforcement body 510 adjacent to the substrate 200; the substrate 200 includes the substrate main body 210 and a plurality of second abutting structures 220, wherein the second abutting structures 220 are disposed on one side of the substrate main body 210 close to the reinforcing structure 500, and the second abutting structures 220 and the first abutting structures 520 are disposed in one-to-one correspondence.
The shape of the first abutting structure 520 is a triangular prism, which includes a first surface 531, a second surface 532 and a third surface 533 that are sequentially connected, the third surface 533 and a surface of the reinforcing body portion 510 that is close to the substrate 200 are on the same plane, a projection of a connecting line of the first surface 531 and the second surface 532 on the reinforcing body portion 510 is not overlapped with the third surface 533, a cross section of the first abutting structure 520 is an obtuse triangle, and an internal included angle between the first surface 531 and the third surface 533 is an obtuse angle.
The second abutting structure 220 is a triangular prism, and includes a fourth surface 221, a fifth surface 222, and a sixth surface 223 that are sequentially connected, the sixth surface 223 and a surface of the substrate main body portion 210 that is close to the reinforcing structure 500 are on the same plane, a projection of a connection line between the fourth surface 221 and the fifth surface 222 on the substrate main body portion 210 is not overlapped with the sixth surface 223, a cross section of the second abutting structure 220 is an obtuse triangle, and an internal included angle between the fifth surface 222 and the sixth surface 223 is an obtuse angle.
The first abutting structures 520 are divided into a plurality of first left abutting structures 541 and a plurality of first right abutting structures 542, and the first left abutting structures 541 and the first right abutting structures 542 are respectively distributed on two sides of the symmetry axis of the reinforcing body portion 510 and are symmetrically distributed.
The first face 531 of the first left abutment structure 541 is close to the axis of symmetry, and the second face 532 of the first left abutment structure 541 is away from the axis of symmetry; the first face 531 of the first right abutment structure 542 is adjacent to the axis of symmetry and the second face 532 of the first right abutment structure 542 is facing away from the axis of symmetry.
The second abutting structures 220 are divided into a plurality of second left abutting structures 224 and a plurality of second right abutting structures 225, and the second left abutting structures 224 and the second right abutting structures 225 are respectively distributed on two sides of the symmetry axis of the reinforcing body portion 510 and are symmetrically distributed.
The fourth face 221 of the second left abutment structure 224 is close to the symmetry axis, and the fifth face 222 of the second left abutment structure 224 faces away from the symmetry axis; the fourth face 221 of the second right abutment structure 225 is adjacent to the axis of symmetry and the fifth face 222 of the second right abutment structure 225 faces away from the axis of symmetry.
The first left abutting structure 541 is disposed between two adjacent second left abutting structures 224, and the first surface 531 of the first left abutting structure 541 is abutted against the fifth surface 222 of the second left abutting structure 224, and the second surface 532 of the first left abutting structure 541 is abutted against the fourth surface 221 of the other second left abutting structure 224. The first right abutting structure 542 is disposed between two adjacent second right abutting structures 225, and the first surface 531 of the first right abutting structure 542 is abutted against the fifth surface 222 of the second right abutting structure 225, and the second surface 532 of the first left abutting structure 541 is abutted against the fourth surface 221 of the other second left abutting structure 224.
So that the first left abutment structure 541 on the reinforcing body portion 510 and the second left abutment structure 224 on the substrate body portion 210 are in abutting engagement with each other, and the first right abutment structure 542 on the reinforcing body portion 510 and the second right abutment structure 225 on the substrate body portion 210 are in abutting engagement with each other. The problem of bending of the substrate 200 caused by binding the driving chip 11 is alleviated.
Further, the direction of the first left abutting structure 541 away from the symmetry axis is a third direction, and the direction of the first right abutting structure 542 away from the symmetry axis is a fourth direction;
along the third direction, an inner angle between the first surface 531 and the third surface 533 of the first left abutting structure 541 gradually increases;
along the fourth direction, the inner angle of the first face 531 and the third face 533 of the first right abutment structure 542 gradually increases;
the second left abutment structure 224 matches the shape of the first left abutment structure and the second right abutment structure 225 matches the shape of the first right abutment structure 542.
Bending of the substrate 200 occurs toward one side of the driving chip 11, and then the stress generated between the first left abutting structure 541 and the second left abutting structure 224 is gradually increased along the third direction and the fourth direction; the stress generated between the first right abutment structure 542 and the second right abutment structure 225 is also gradually increased.
Thus, by following the third direction, the inner angle between the first surface 531 and the third surface 533 of the first left abutment structure 541 increases gradually; along the fourth direction, the inner angle of the first face 531 and the third face 533 of the first right abutment structure 542 gradually increases. Along the third direction, the inner angle between the fifth surface 222 and the sixth surface 223 of the second left abutting structure 224 gradually increases; along the fourth direction, the inner angle between the fifth surface 222 and the sixth surface 223 of the second right abutting structure 225 gradually increases.
Thereby, the first left abutting structure 541 gives the second left abutting structure 224 a tighter and tighter fit along the third and fourth directions, and the first right abutting structure 542 gives the second right abutting structure 225 a tighter and tighter fit, so that the forces generated between them will also gradually increase, thereby counteracting the increasing stress generated by the deformation of the substrate 200. Further reducing the severity of light leakage from the deformed region 24.
Example 2:
fig. 10 is a schematic view of a first filter portion according to a second embodiment of the present application, and as shown in fig. 10, unlike the first embodiment, the filter portion 333 in the first embodiment is composed of a plurality of annular grooves 334, and the filter portion 333 in the second embodiment is composed of a plurality of ink dots 620. Specific:
the filter 333 includes a plurality of sleeved annular regions 610, and the direction of the outside extension of the center of the annular region 610 is the second direction; a plurality of ink dots 620 are disposed in each of the annular regions 610, and the areas of the ink dots 620 in the annular regions 610 gradually decrease along the second direction.
The larger the area of the ink dot 620, the weaker the intensity of the corresponding light, and the darker the area corresponding to the display panel 20. So that the light passing through the filter 333 tends to be darker in the middle and lighter in the sides, so as to compensate for the problem of darker light leakage in the middle and lighter sides of the deformed region 24.
Compared with the first embodiment, the present embodiment does not need to provide the annular groove 334 on the light guide plate 330, only needs to print the ink dots 620 at the positions of the light guide plate 330 corresponding to the deformation regions 24, the process is simpler, and the adjustment and reworking can be simpler by erasing the ink dots 620 when the position of the filter 333 is wrong.
Fig. 11 is a schematic view of a second optical filtering portion according to a second embodiment of the present application, as shown in fig. 11, the optical filtering portion 333 includes a plurality of sleeved annular regions 610, and a direction extending outwards from a center of the annular regions 610 is a second direction; a plurality of ink dots 620 are disposed in each of the annular regions 610, and each of the ink dots 620 has an equal area, and the density of the ink dots 620 in the annular region 610 gradually decreases along the second direction.
The greater the density of ink dots 620, the weaker the intensity of the corresponding light, and the darker the area corresponding to display panel 20. So that the light passing through the filter 333 tends to be darker in the middle and lighter in the sides, so as to compensate for the problem of darker light leakage in the middle and lighter sides of the deformed region 24.
In contrast to the first filtering portion, the size of each ink dot 620 in this embodiment is the same, and the light transmittance is changed only by adjusting the density, so that the reflection of light by each ink dot 620 is the same, and the light transmittance in each annular region 610 is controlled more accurately.
It should be noted that, the inventive concept of the present application may form a very large number of embodiments, but the application documents have limited space and cannot be listed one by one, so that on the premise of no conflict, the above-described embodiments or technical features may be arbitrarily combined to form new embodiments, and after the embodiments or technical features are combined, the original technical effects will be enhanced.
The technical scheme of the application can be widely applied to various display panels, such as TN (Twisted Nematic) display panels, IPS (In-Plane Switching) display panels, VA (Vertical Alignment) display panels, MVA (Multi-Domain Vertical Alignment) display panels, and the scheme can be applied to all the display panels.
The foregoing is a further detailed description of the present application in connection with specific alternative embodiments, and it is not intended that the practice of the present application be limited to such descriptions. It should be understood that those skilled in the art to which the present application pertains may make several simple deductions or substitutions without departing from the spirit of the present application, and all such deductions or substitutions should be considered to be within the scope of the present application.

Claims (10)

1. The display device comprises a display panel, a driving chip and a backlight module, wherein the display panel is arranged opposite to the backlight module, and the backlight module provides backlight for the display panel; the display panel comprises a display area and a non-display area, the non-display area is arranged around the display area, and the driving chip is bound on the display panel and is positioned in the non-display area;
the backlight module comprises a back plate, a light source and a light guide plate, wherein the light guide plate and the light source are arranged on the back plate, the light source faces the side face of the light guide plate, and the light guide plate is positioned between the display panel and the back plate; the display panel is characterized in that the display area of the display panel comprises a deformation area and a non-deformation area, the light guide plate is provided with a light filtering part corresponding to the deformation area, and the light filtering part reduces light rays irradiated to the deformation area.
2. The display device according to claim 1, wherein the deformation area is covered by orthographic projection of the light filtering portion on the display panel, and the orthographic projection area of the light filtering portion on the display panel is larger than the area of the deformation area, the light filtering portion includes a plurality of sleeved annular grooves, and a center of each annular groove corresponds to the center of the deformation area.
3. The display device according to claim 2, wherein the cross section of the annular groove is V-shaped, and the width of the notch of each of the plurality of annular grooves is gradually increased along the first direction with the direction in which the center of the circle extends outward as the first direction.
4. A display device according to claim 3, wherein the depth of the annular groove is 50 μm to 60 μm, and the notch width of the annular groove is 100 μm to 120 μm.
5. The display device of claim 2, wherein the backlight module further comprises an optical paste filled in the annular groove.
6. The display device according to claim 3, wherein the backlight module further comprises a first diffusion plate, the first diffusion plate is disposed on a side of the light guide plate facing away from the back plate, and the first diffusion plate completely covers the light guide plate, the first diffusion layer comprises a protective layer and a diffusion layer which are stacked, and the diffusion layer is disposed on a side of the protective layer facing away from the light guide plate;
the diffusion layer comprises a plurality of diffusion particles, and the density of the diffusion particles at the deformation region corresponding to the diffusion layer is larger than the density of the diffusion particles at other regions corresponding to the diffusion layer.
7. A display device according to claim 3, wherein the light guide plate comprises a main body portion and a protruding portion, the protruding portion is disposed on a side of the main body portion facing the display panel, the protruding portion corresponds to the deformation region of the display panel, a surface of the protruding portion facing away from the main body portion is arc-shaped, and the light filtering portion is disposed on a surface of the protruding portion.
8. The display device according to claim 1, wherein the light source includes a plurality of light beads, the back plate includes a main plate and a side plate, the side plate is disposed at an edge of the main plate, the light guide plate is disposed on the main plate, the plurality of light beads are disposed on the side plate at intervals and face the light guide plate, and the light filtering portion is disposed on a symmetry axis of two adjacent light beads and is disposed at an intersection of two adjacent light bead irradiation regions.
9. The display device according to claim 1, wherein the light filtering portion includes a plurality of sleeved annular regions, and a direction in which a center of the annular regions extends outwards is a second direction;
and a plurality of ink points are arranged in each annular area, and the areas of the ink points in the annular areas gradually decrease along the second direction.
10. The display device according to claim 1, wherein the light filtering portion includes a plurality of sleeved annular regions, and a direction in which a center of the annular regions extends outwards is a second direction;
and a plurality of ink points are arranged in each annular area, the areas of the ink points are equal, and the density of the ink points in the annular area gradually decreases along the second direction.
CN202310332998.4A 2023-03-24 2023-03-24 Display device Pending CN116400533A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117706822A (en) * 2024-02-06 2024-03-15 惠科股份有限公司 Display panel and display device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117706822A (en) * 2024-02-06 2024-03-15 惠科股份有限公司 Display panel and display device

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