Liquid crystal display screen capable of reducing Mura
By adding notches and grooves to the sidewalls of the LCD screen, the Mura problem caused by the expansion and contraction of the backlight frame was solved, improving the display effect and product quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-28
- Publication Date
- 2026-03-20
AI Technical Summary
When the backlight frame expands and contracts under hot and cold environments, it causes murky defects in the glass of the display module, affecting the display effect.
Notches and grooves are provided on the sidewalls of the LCD screen, especially notches are provided on the sidewalls near the FPC, and grooves are provided in the middle of the other sidewalls. The depth and width of the grooves are preferably 0.5mm-1.0mm, and the sharp corners are chamfered. There are buffer pads on the inner side of the sidewalls, and the substrate extension of the display module is provided in accordance with the grooves.
This effectively avoids the impact of backlight frame expansion and contraction stress on the display module glass, reduces Mura defects, and improves display performance and product competitiveness.
Smart Images
Figure CN224020103U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a liquid crystal display technical field more specifically, relate to a kind of liquid crystal display panel for reducing Mura. BACKGROUND
[0002] Mura refers to the phenomenon of uneven display brightness, causing various traces. The simplest judgment method is to switch to a black picture or other low gray scale picture in a dark room, and the display brightness unevenness can be observed obviously.
[0003] When the glass of the display module is affected by external force, Mura defects are prone to occur due to deformation, thereby affecting the display effect. The backlight module of the liquid crystal display screen usually has a backlight frame to position the glass. However, the backlight frame expands and shrinks in cold and hot environments, especially for large-size modules. This will cause the glass to appear Mura defects due to the expansion and contraction stress of the backlight frame. SUMMARY
[0004] The technical problem to be solved by the utility model is how to avoid the influence of the expansion and contraction of the backlight frame in cold and hot environments on the glass of the display module, and avoid Mura defects of the glass of the display module due to the expansion and contraction stress of the backlight frame.
[0005] The technical problem to be solved by the utility model is solved by the following technical scheme:
[0006] To solve the above technical problems, the utility model provides a liquid crystal display screen for reducing Mura, which comprises a lower iron stand, a backlight frame and a display module. The backlight frame is arranged at the upper edge of the lower iron stand. The backlight frame comprises a square frame-shaped bottom plate and four side walls extending upward from the square frame-shaped bottom plate. The display module is arranged above the bottom plate. The display module has an FPC led out outward. The four side walls comprise a lead-out side wall near the FPC and three other side walls. The lead-out side wall is provided with a notch. The FPC is led out from the notch. At least one groove is formed in the upper surface of the middle of each other side wall.
[0007] As a preferred embodiment of the liquid crystal display screen for reducing Mura provided by the utility model, the depth of the groove is equal to the difference between the height of the side wall and the thickness of the square frame-shaped bottom plate.
[0008] As a preferred embodiment of the liquid crystal display screen for reducing Mura provided by the utility model, the width of the groove is 0.5-1.0 mm.
[0009] As a preferred embodiment of the liquid crystal display screen for reducing Mura provided by the utility model, a chamfer is arranged at the sharp corner of the groove.
[0010] As a preferred implementation form of the liquid crystal display screen for reducing Mura provided by the utility model, the chamfer is a reversed right angle or a reversed round angle.
[0011] As a preferred implementation form of the liquid crystal display screen for reducing Mura provided by the utility model, the inner side of the side wall is provided with a buffer pad.
[0012] As a preferred implementation form of the liquid crystal display screen for reducing Mura provided by the utility model, the material of the buffer pad is rubber.
[0013] As a preferred implementation form of the liquid crystal display screen for reducing Mura provided by the utility model, the display module comprises a lower polarizer, a lower substrate, an upper substrate and an upper polarizer which are sequentially and orderly arranged from bottom to top.
[0014] As a preferred implementation form of the liquid crystal display screen for reducing Mura provided by the utility model, the lower substrate and the upper substrate are both provided with an extension part, the shape and position of the extension part correspond to the shape and position of the groove, and the extension part is arranged at the groove.
[0015] As a preferred implementation form of the liquid crystal display screen for reducing Mura provided by the utility model, the length and width of the extension part are shorter than the length and width of the groove.
[0016] The utility model has the following beneficial effects:
[0017] Due to the fact that the leading side wall is provided with a gap and the upper surface of the middle part of each other side wall is provided with at least one groove, the expansion and contraction of the backlight rubber frame under cold and hot environments can be avoided to affect the glass of the display module, the glass of the display module can be prevented from being affected by the expansion and contraction stress of the backlight rubber frame to cause Mura defects, the influence of the expansion and contraction of the backlight rubber frame under cold and hot environments on the display effect of the liquid crystal display screen is reduced, and the competitiveness of the product is improved. BRIEF DESCRIPTION OF DRAWINGS
[0018] In order to more clearly illustrate the scheme in the application, the drawings needed in the embodiment description will be briefly introduced below, and obviously, the drawings in the following description are some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative labor.
[0019] Figure 1 The structure diagram of the liquid crystal display screen for reducing Mura provided by the utility model.
[0020] Figure 2 The structure diagram of the liquid crystal display screen for reducing Mura provided by the utility model. Figure 1 The enlarged view of A in the middle.
[0021] Figure 3 for Figure 1 The left view.
[0022] Figure 4 for Figure 3 Enlarged view of point B in the middle.
[0023] Explanation of icon numbers:
[0024] 1. Lower iron frame; 2. Backlight frame; 3. Display module; 21. Base plate; 4. FPC; 22. Side wall; 23. Notch; 24. Groove. Detailed Implementation
[0025] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.
[0026] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0027] Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first," "second," or "third" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0028] The utility model provides a kind of liquid crystal display panel for reducing Mura, it includes lower iron stand, backlight rubber frame and display module, the backlight rubber frame is arranged at the upper edge of the lower iron stand, the backlight rubber frame includes square frame bottom plate and four side walls extended upwards by the square frame bottom plate, the display module is arranged above the bottom plate, the display module has FPC leading out outward, four side walls include leading-out side wall close to FPC and three other side walls, the leading-out side wall is provided with notch, and the FPC is led out from the notch, and at least one recess is provided in the upper surface of the middle of each other side wall.
[0029] Due to the notch of leading-out side wall, and at least one recess is provided in the upper surface of the middle of each other side wall, to avoid the influence of backlight rubber frame on the glass of display module when it expands and shrinks in cold and hot environment, avoid the glass of display module from Mura due to the expansion and contraction stress of backlight rubber frame, reduce the influence of backlight rubber frame expansion and contraction in cold and hot environment on the display effect of liquid crystal display, improve the competitiveness of products.
[0030] In order to make the person in the art better understand the scheme of the present application, the technical scheme in the embodiment of the present application will be described clearly and completely below in conjunction with the drawings. The utility model will be described in detail below in conjunction with the drawings and examples, and the examples are shown in the drawings, wherein the same or similar numerals represent the same or similar elements or elements with the same or similar functions throughout. The examples described below by referring to the drawings are exemplary, and are intended to explain the utility model, and cannot be understood as a limitation of the utility model.
[0031] Embodiment 1, please refer to Figures 1 to 4 A kind of liquid crystal display panel for reducing Mura is provided for the utility model, it includes lower iron stand 1, backlight rubber frame 2 and display module 3, backlight rubber frame 2 is arranged at the upper edge of lower iron stand 1, backlight rubber frame 2 includes square frame bottom plate 21 and four side walls 22 extended upwards by square frame bottom plate 21, display module 3 is arranged above bottom plate 21, display module 3 has FPC 4 leading out outward, four side walls 22 include leading-out side wall close to FPC 4 and three other side walls, leading-out side wall is provided with notch 23, and FPC 4 is led out from notch 23, and at least one recess 24 is provided in the upper surface of the middle of each other side wall. Due to the notch 23 of leading-out side wall, and at least one recess 24 is provided in the upper surface of the middle of each other side wall, to avoid the influence of backlight rubber frame 2 on the glass of display module 3 when it expands and shrinks in cold and hot environment, avoid the glass of display module 3 from Mura due to the expansion and contraction stress of backlight rubber frame 2, reduce the influence of backlight rubber frame 2 expansion and contraction in cold and hot environment on the display effect of liquid crystal display, improve the competitiveness of products.
[0032] In the embodiment, the upper surface at the middle of each other side wall is provided with a groove 24, and two, three or more grooves 24 can be provided in the backlight adhesive frame 2 with large size to avoid Mura defect of the glass of the display module 3 due to the expansion and contraction stress of the backlight adhesive frame 2.
[0033] Further, the depth of the groove 24 is equal to the difference between the height of the side wall 22 and the thickness of the square frame-shaped bottom plate 21, that is, the depth of the groove 24 is equal to the depth of the glass tank of the display module 3, and the width of the groove 24 is 0.5-1.0 mm.
[0034] Further, the sharp corner of the groove 24 is provided with a chamfer, which is a reversed right angle or a reversed round angle, to avoid damage to the display module 3 during assembly and improve the yield of the product.
[0035] Further, the inner side of each side wall 22 is provided with a buffer pad made of rubber, which can absorb the impact force of the display module 3 during transportation and use to avoid damage or abnormal noise of the display module 3 due to collision with the backlight adhesive frame 2 and improve the competitiveness of the product.
[0036] Embodiment 2, please refer to Figures 1 to 4 As a further optimization scheme of embodiment 1, in the embodiment, the display module 3 comprises a lower polarizer, a lower substrate, an upper substrate and an upper polarizer which are sequentially stacked from bottom to top, and the lower substrate and the upper substrate are both provided with an extension part, the shape and position of the extension part correspond to the shape and position of the groove 24, the extension part is arranged at the groove 24, the extension part is fixed and positioned by the groove 24, and the length and width of the extension part are shorter than the length and width of the groove 24 to avoid the influence of the extension part due to the expansion and contraction of the backlight adhesive frame 2 in cold and hot environment and avoid Mura.
[0037] In the utility model, unless another definite provision and limitation, the terms "mount", "link", "connect", "fix" and the like terms should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or be integrated;Can be mechanical connection, also can be electric connection or each other can communicate;Can be directly connected, also can be indirectly connected through intermediate medium, can be the communication or the interaction relationship of two elements inside two elements, unless another definite limitation. For ordinary skilled in the art, the above terms can be understood according to the specific meaning of the utility model.
[0038] Obviously, the above-described embodiments are only some embodiments but not all the embodiments of the present application, the preferred embodiments of the present application are shown in the drawings, but do not limit the patent scope of the present application. The present application can be implemented in many different forms, and conversely, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments, or make equivalent replacements to some technical features therein. Any equivalent structure made by using the content of the specification and drawings, directly or indirectly applied to other related technical fields, is also within the patent protection scope of the present application.
Claims
1. A liquid crystal display screen that reduces mura, characterized in that, It includes a lower iron frame, a backlight frame, and a display module. The backlight frame is located at the upper edge of the lower iron frame. The backlight frame includes a square base plate and four side walls extending upward from the square base plate. The display module is located above the base plate. An FPC is led out from the display module. The four side walls include an extension side wall near the FPC and three other side walls. The extension side wall has a notch, from which the FPC is led out. At least one groove is formed on the upper surface of the middle of each of the other side walls.
2. The liquid crystal display screen for reducing Mura according to claim 1, characterized in that, The depth of the groove is equal to the difference between the height of the sidewall and the thickness of the rectangular base plate.
3. The liquid crystal display screen for reducing Mura according to claim 1, characterized in that, The width of the groove is 0.5mm-1.0mm.
4. The liquid crystal display screen for reducing Mura according to claim 1, characterized in that, The groove has a chamfer at its sharp corner.
5. The liquid crystal display screen for reducing Mura according to claim 4, characterized in that, The chamfer is either a right angle or a rounded corner.
6. The liquid crystal display screen for reducing Mura according to claim 1, characterized in that, A cushioning pad is provided on the inner surface of the sidewall.
7. The liquid crystal display screen for reducing Mura according to claim 6, characterized in that, The cushioning pad is made of rubber.
8. The liquid crystal display screen for reducing Mura according to claim 1, characterized in that, The display module includes a lower polarizer, a lower substrate, an upper substrate, and an upper polarizer stacked sequentially from bottom to top.
9. The liquid crystal display screen for reducing Mura according to claim 8, characterized in that, Both the lower substrate and the upper substrate are provided with an extension portion, the shape and position of which correspond to the shape and position of the groove, and the extension portion is disposed at the groove.
10. The liquid crystal display screen for reducing Mura according to claim 9, characterized in that, The length and width of the extension are both shorter than the length and width of the groove.