Display module

Abstract

The utility model discloses a display module which is characterized in that a first light shielding layer is arranged on one side, facing a flexible circuit board, of a polarizing layer, and the first light shielding layer is arranged to be overlapped with a part, located between a side plate and the side wall of a display panel, of the flexible circuit board; according to the display module, the first light shielding layer can shield the part, located between the side plate and the side wall of the display panel, of the flexible circuit board, so that the integrity of the display module is enhanced, and the visual effect of the display module is improved; compared with a traditional scheme, a top plate does not need to be arranged on the side plate of the back plate and used for shielding the part, located between the side plate and the side wall of the display panel, of the flexible circuit board, the situation that installation of the display panel of the OLED displayer is hindered by the top plate of the back plate is avoided, on one hand, the installation difficulty of the display panel can be reduced, and the installation efficiency of the display panel is improved. And on the other hand, the fragment risk of the display panel can be reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of display, in particular to a display module. BACKGROUND

[0002] With reference to Figure 1 The conventional OLED (Organic Light Emitting Diode) display includes a back plate 01, a support plate 02 arranged on the bottom plate 011 of the back plate 01, a display panel 04 arranged on the side of the support plate 02 away from the bottom plate, a control circuit board 03 arranged on the side of the support plate 02 close to the bottom plate, and a flexible circuit board 05 for electrically connecting the control circuit board 03 and the display panel 04. After the flexible circuit board 05 electrically connects the display panel 04 and the control circuit board 03, the flexible circuit board 05 has a bending portion 051, and the bending portion 051 of the flexible circuit board 05 is located between the side wall of the display panel and the side plate 012 of the back plate, which reduces the integrity of the OLED display, thereby reducing the visual effect of the OLED display. In order to improve the visual effect of the OLED display, the OLED display is provided with a top plate 013 on the side plate 012 of the back plate 01, and the top plate 013 can shield the bending portion 051 of the flexible circuit board 05, thereby improving the visual effect of the OLED display. However, the top plate 013 also hinders the installation of the display panel 04 of the OLED display, thereby increasing the installation difficulty of the display panel. Utility model content

[0003] Embodiments of the present application provide a display module, which can reduce the installation difficulty of the display panel.

[0004] Embodiments of the present application provide a display module, which comprises:

[0005] A back plate, the back plate comprises a bottom plate and a side plate connected with the bottom plate, and the bottom plate and the side plate form a containing cavity;

[0006] A display panel arranged in the containing cavity;

[0007] A polarizing layer arranged on the side of the display panel away from the bottom plate;

[0008] A control circuit board arranged on the side of the support close to the bottom plate;

[0009] A flexible circuit board electrically connected with the display panel and the control circuit board, and a part of the flexible circuit board is located between the side plate and the side wall of the display panel;

[0010] A first light shielding layer arranged on the side of the polarizing layer facing the flexible circuit board;

[0011] The first light shielding layer overlaps with the flexible circuit board in a part between the side plate and the side wall of the display panel in a top view of the display module.

[0012] Further, the flexible circuit board comprises a first horizontal part, a bending part and a second horizontal part, the first horizontal part is electrically connected with the display panel, the second horizontal part is electrically connected with the control circuit board, and the bending part is located between the side plate and the side wall of the display panel.

[0013] The first light shielding layer overlaps with the bending part in a top view of the display module.

[0014] Further, a surface of the first light shielding layer close to a side of the bottom plate is in contact with the first horizontal part.

[0015] Further, the display panel comprises an array substrate, a light emitting device layer and an encapsulation layer, the array substrate is arranged on the bottom plate, the light emitting device layer is arranged on a side of the array substrate away from the bottom plate, and the encapsulation layer is arranged on a side of the light emitting device layer away from the bottom plate, a pad is arranged on the array substrate, the first horizontal part is electrically connected with the pad, and a spacing region is arranged between a side wall of a side of the light emitting device layer close to the first horizontal part and a side wall of a side of the first horizontal part close to the light emitting device layer.

[0016] The display module further comprises a second light shielding layer, and the second light shielding layer is arranged between the polarizing layer and the encapsulation layer.

[0017] In a top view of the display module, the second light shielding layer covers at least the spacing region, and a part of the second light shielding layer overlaps with a part of the light emitting device layer.

[0018] Further, a part of the second light shielding layer close to a side of the side plate is connected with the first light shielding layer.

[0019] Further, a product of optical density and thickness of the first light shielding layer is equal to a product of optical density and thickness of the second light shielding layer.

[0020] Further, an outer edge of the polarizing layer exceeds an edge of the display panel, and a part of the first light shielding layer exceeding the edge of the display panel overlaps with the first light shielding layer in a top view of the display module.

[0021] Further, in the top view of the display module, the edge of the polarizing layer close to one side of the side plate is flush with the edge of the flexible circuit board close to one side of the side plate, and the curvature radius of the bending part of the flexible circuit board is not greater than 1 mm.

[0022] Further, the length from the edge of the encapsulation layer close to one side of the side plate to the edge of the polarizing layer close to one side of the side plate is 1.6 mm to 2.1 mm.

[0023] Further, in the top view of the display module, the edge of the polarizing layer close to one side of the side plate is flush with the edge of the flexible circuit board close to one side of the side plate, and the thickness of the flexible circuit board is not greater than 50 μm.

[0024] The beneficial effects of the present application are as follows:

[0025] The present application provides a display module, by setting the first light shielding layer on the side of the polarizing layer facing the flexible circuit board, and setting the first light shielding layer to overlap with the part of the flexible circuit board between the side plate and the side wall of the display panel, so that the first light shielding layer can shield the part of the flexible circuit board between the side plate and the side wall of the display panel, thereby enhancing the integrity of the display module and improving the visual effect of the display module. Compared with the traditional scheme, there is no need to set a top plate on the side plate of the back plate to shield the part of the flexible circuit board between the side plate and the side wall of the display panel, avoiding the case that the top plate of the back plate hinders the mounting of the display panel of the OLED display. On the one hand, it can reduce the mounting difficulty of the display panel, and on the other hand, it can also reduce the risk of display panel breakage. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 is a schematic view of a traditional display module;

[0027] Figure 2 is a top view of the display module of the present application;

[0028] Figure 3 is Figure 2 the cross-sectional view of the display module shown at A-A'.

[0029] 100-back plate, 110-bottom plate, 120-side plate; 200-support; 300-display panel, 310-array substrate, 320-light emitting device layer, 330-encapsulation layer; 400-polarizing layer; 500-control circuit board; 600-flexible circuit board, 610-first horizontal part, 620-bending part, 630-second horizontal part; 700-first light shielding layer; 800-second light shielding layer; 900-first adhesive layer; 1000-second adhesive layer; 1100-solder pad.

[0030] 01-back plate, 011-bottom plate, 012-side plate, 013-top plate; 02-support plate; 03-control circuit board; 04-display panel; 05-flexible circuit board, 051-bending part. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present application will be described below with reference to the accompanying drawings in the embodiments of the present application. The technical solutions described below are only used to explain and illustrate the ideas of the present application, and should not be regarded as limiting the protection scope of the present application.

[0032] In addition, the terms "first", "second", and similar words do not represent any order, quantity or importance, but are only used to distinguish different technical features. The term "multiple" and similar words represent two or more, unless otherwise explicitly limited.

[0033] In order to improve the visual effect of the OLED display, the conventional scheme of the OLED display is to set a top plate on the side plate of the back plate, and the top plate can shield the bending part of the flexible circuit board, thereby improving the visual effect of the OLED display. However, at the same time, the top plate will also hinder the installation of the display panel of the OLED display, causing the installation difficulty and the risk of breakage of the display panel to increase.

[0034] The embodiments of the present application provide a display module, referring to Figure 2 and Figure 3 The display module includes a back plate 100, a display panel 300, a polarizing layer 400, a control circuit board 500, a flexible circuit board 600, and a first light shielding layer 700.

[0035] Specifically, the back plate 100 includes a bottom plate 110 and a side plate 120 connected to the bottom plate 110; the display panel 300 is arranged in the accommodation cavity; the polarizing layer 400 is arranged on the side of the display panel 300 away from the bottom plate 110; the control circuit board 500 is arranged on the side of the display panel 300 close to the bottom plate 110; the flexible circuit board 600 is electrically connected with the display panel 300 and the control circuit board 500, and a part of the flexible circuit board 600 is located between the side plate 120 and the side wall of the display panel 300; the first light shielding layer 700 is arranged on the side of the polarizing layer 400 facing the flexible circuit board 600; wherein, in the top view of the display module 10, the first light shielding layer 700 and the part of the flexible circuit board 600 located between the side plate 120 and the side wall of the display panel 300 overlap.

[0036] By setting the first light shielding layer 700 on the side facing the flexible circuit board, and setting the first light shielding layer 700 to overlap with the part of the flexible circuit board 600 located between the side plate 120 and the side wall of the display panel 300, the first light shielding layer 700 can shield the part of the flexible circuit board 600 located between the side plate 120 and the side wall of the display panel 300, thereby enhancing the integrity of the display module 10 and improving the visual effect of the display module 10. Compared with the traditional scheme, there is no need to set a top plate on the side plate 120 of the back plate 100 to shield the part of the flexible circuit board 600 located between the side plate 120 and the side wall of the display panel 300, avoiding the case that the top plate of the back plate 100 hinders the installation of the display panel 300 of the OLED display. On the one hand, it can reduce the installation difficulty of the display panel, and on the other hand, it can also reduce the risk of display panel breakage.

[0037] In the embodiment, the material of the first light shielding layer 700 includes black glue material.

[0038] In the embodiment, the display module 10 is an OLED display module.

[0039] In the embodiment, the display module 10 is a liquid crystal display module.

[0040] In the embodiment, the display module 10 is an MLED display module.

[0041] In the embodiment, with reference to Figure 3 , the flexible circuit board 600 includes a first horizontal part 610, a bending part 620, and a second horizontal part 630. The first horizontal part 610 is electrically connected with the display panel 300, the second horizontal part 630 is electrically connected with the control circuit board 500, and the bending part 620 is located between the side plate 120 and the side wall of the display panel 300. In the top view of the display module 10, the first light shielding layer 700 overlaps with the bending part 620. By setting the flexible circuit board 600 to include the first horizontal part 610, the bending part 620, and the second horizontal part 630, the first horizontal part 610 is electrically connected with the display panel 300, the second horizontal part 630 is electrically connected with the control circuit board 500, and the bending part 620 is located between the side plate 120 and the side wall of the display panel 300. The first light shielding layer 700 overlaps with the bending part 620, so that the first light shielding layer 700 can shield the bending part 620, thereby enhancing the integrity of the display module 10 and improving the visual effect of the display module 10.

[0042] In the embodiment, with reference to Figure 3The surface of the first light-shielding layer 700 close to the side of the bottom plate 110 is in contact with the first horizontal part 610. By setting the surface of the first light-shielding layer 700 close to the side of the bottom plate 110 to be in contact with the first horizontal part 610, the first light-shielding layer 700 can support the polarizing layer 400, thereby reducing the risk of the polarizing layer 400 being bent.

[0043] In the present embodiment, with reference to Figure 3 The display panel 300 includes an array substrate 310, a light-emitting device layer 320, and an encapsulation layer 330. The array substrate 310 is arranged on the bottom plate 110. The light-emitting device layer 320 is arranged on the side of the array substrate 310 away from the bottom plate 110. The encapsulation layer 330 is arranged on the side of the light-emitting device layer 320 away from the bottom plate 110. The array substrate 310 is provided with a pad 1100. The first horizontal part 610 is electrically connected to the pad 1100. A spacing region B is arranged between the sidewall of the side of the light-emitting device layer 320 close to the first horizontal part 610 and the sidewall of the side of the first horizontal part 610 close to the light-emitting device layer 320. The display module 10 further includes a second light-shielding layer 800. The second light-shielding layer 800 is arranged between the polarizing layer 400 and the encapsulation layer 330. In the top view of the display module 10, the second light-shielding layer 800 covers at least part of the spacing region B. Part of the second light-shielding layer 800 overlaps part of the light-emitting device layer 320. Because there is a spacing region B between the light-emitting device layer 320 and the flexible circuit board 600, that is, a spacing region B is arranged between the sidewall of the side of the light-emitting device layer 320 close to the first horizontal part 610 and the sidewall of the side of the first horizontal part 610 close to the light-emitting device layer 320, the part of the array substrate 310 corresponding to the spacing region B is not shielded. However, there are a large number of metal lines on the part of the array substrate 310 corresponding to the spacing region B. Meanwhile, a step structure is also formed between the edge of the side of the light-emitting device layer 320 close to the side plate 120 and the array substrate 310, which leads to poor integrity of the display module 10. Therefore, the second light-shielding layer 800 is arranged to cover the spacing region B, and part of the second light-shielding layer 800 overlaps part of the light-emitting device layer 320. On the one hand, the second light-shielding layer 800 can shield the metal lines on the array substrate 310, thereby reducing the reflection of light by the metal lines. On the other hand, the second light-shielding layer 800 can shield the step structure, thereby further enhancing the integrity of the display module 10 and improving the visual effect of the display module 10.

[0044] In the present embodiment, in the top view of the display module 10, the second light-shielding layer 800 covers part of the spacing region B, and the first light-shielding layer 700 covers another part of the spacing region B.

[0045] In the present embodiment, in the top view of the display module 10, the second light-shielding layer 800 completely covers the spacing region B.

[0046] In the embodiment, the material of the first light shielding layer 700 is different from the material of the second light shielding layer 800. Since the first light shielding layer 700 is located between the flexible circuit board 600 and the polarizing layer 400, and the second light shielding layer 800 is located between the encapsulation layer 330 and the polarizing layer 400, the flexible circuit board 600 and the polarizing layer 400 have a large spacing, and the encapsulation layer 330 and the polarizing layer 400 have a small spacing, so that the first light shielding layer 700 needs to ensure a large thickness, and the second light shielding layer 800 needs to ensure a small thickness, so as to facilitate the production of the display module 10. Therefore, by setting the material of the first light shielding layer 700 to be different from the material of the second light shielding layer 800, the convenience of producing the display module 10 can be improved, and the production difficulty of the display module 10 can be reduced.

[0047] In the embodiment, the material of the second light shielding layer 800 includes black ink.

[0048] In the embodiment, referring to Figure 3 , the part of the second light shielding layer 800 close to one side of the side plate 120 is connected with the first light shielding layer 700. By setting the part of the second light shielding layer 800 close to one side of the side plate 120 to be connected with the first light shielding layer 700, the problem that the shielding property of the second light shielding layer 800, the part of the array substrate 310 corresponding to the bending part 620 and the spacing area B, and the step structure is reduced due to the gap between the second light shielding layer 800 and the first light shielding layer 700, and the integrity of the display module 10 is reduced can be avoided.

[0049] In the embodiment, the product of the optical density of the first light shielding layer 700 and the thickness of the first light shielding layer 700 is equal to the product of the optical density of the second light shielding layer 800 and the thickness of the second light shielding layer 800. When the materials of the second light shielding layer 800 and the first light shielding layer 700 are different, there is a color difference between the first light shielding layer 700 and the second light shielding layer 800, which reduces the integrity of the display module 10. Therefore, by setting the product of the optical density of the first light shielding layer 700 and the thickness of the first light shielding layer 700 to be equal to the product of the optical density of the second light shielding layer 800 and the thickness of the second light shielding layer 800, the color difference between the first light shielding layer 700 and the second light shielding layer 800 can be reduced, so that the integrity of the display module 10 can be avoided to be reduced.

[0050] In the embodiment, the outer edge of the polarizing layer exceeds the edge of the display panel, and in the top view of the display module, the part of the first light shielding layer exceeding the edge of the display panel overlaps with the first light shielding layer.

[0051] In the embodiment, the surface of the first light shielding layer 700 away from one side of the side plate 120 is a bevel or an arc surface. Since the surface of the first light shielding layer 700 away from one side of the side plate 120 is a bevel or an arc surface.

[0052] In the present embodiment, with reference to Figure 3 The length a from the edge of the encapsulation layer 330 close to the side plate 120 to the edge of the polarizing layer 400 close to the side plate 120 is 1.6-2.1 mm. By setting the length a from the edge of the encapsulation layer 330 close to the side plate 120 to the edge of the polarizing layer 400 close to the side plate 120 to be 1.6-2.1 mm, on the one hand, the first light shielding layer 700 can completely shield the bending portion 620 of the flexible circuit board 600, thereby ensuring the shielding effect of the first light shielding layer 700, and on the other hand, the risk of the polarizing layer 400 being warped and bent due to the length a from the edge of the encapsulation layer 330 close to the side plate 120 to the edge of the polarizing layer 400 close to the side plate 120 being too long can be avoided. Preferably, the length a from the side of the first light shielding layer 700 away from the side plate 120 to the side of the first light shielding layer 700 close to the side plate 120 is 1.6 mm, 1.7 mm, 1.8 mm, 1.9 mm, 2.0 mm, or 2.1 mm.

[0053] In the present embodiment, in the top view of the display module, the edge of the polarizing layer 400 close to the side plate 120 is flush with the edge of the flexible circuit board 600 close to the side plate 120, and the radius of curvature of the bending portion 620 is not greater than 1 mm. By setting the radius of curvature of the bending portion 620 to be not greater than 1 mm, the length a from the edge of the encapsulation layer 330 close to the side plate 120 to the edge of the polarizing layer 400 close to the side plate 120 can be minimized, thereby reducing the width of the frame of the display module 10. Preferably, the radius of curvature of the bending portion 620 is 0.8 mm, 0.8 2 mm, 0.84 mm, 0.86 mm, 0.88 mm, 0.9 mm, 0.92 mm, 0.94 mm, 0.96 mm, 0.98 mm, or 1 mm.

[0054] In the present embodiment, in the top view of the display module, the edge of the polarizing layer 400 close to the side plate 120 is flush with the edge of the flexible circuit board 600 close to the side plate 120, and the thickness b of the flexible circuit board 600 is not greater than 50 μm. By setting the thickness b of the flexible circuit board 600 to be not greater than 50 μm, the flexible circuit board 600 can be maximally bent, thereby ensuring the radius of curvature of the bending portion 620 to be as small as possible, thereby reducing the length a from the edge of the encapsulation layer 330 close to the side plate 120 to the edge of the polarizing layer 400 close to the side plate 120, and reducing the width of the frame of the display module 10. Preferably, the thickness b of the flexible circuit board 600 is 30 μm, 32 μm, 34 μm, 36 μm, 38 μm, 40 μm, 42 μm, 44 μm, 46 μm, 48 μm, or 50 μm.

[0055] In the embodiment, the material of the flexible circuit board 600 is a PI (polyimide) material. The polyimide material has good flexibility, and the PI material can be bent and stretched without being broken in a thin film state, so that the curvature radius of the bending part 620 of the flexible circuit board 600 is reduced as much as possible under the condition that the flexible circuit board 600 is not broken.

[0056] In the embodiment, the display module 10 further comprises a first adhesive layer 900, and the support 200 is fixed to the bottom plate 110 through the first adhesive layer 900.

[0057] In the embodiment, the display module 10 further comprises a second adhesive layer 1000, and the array substrate 310 is fixed to the support 200 through the second adhesive layer 1000.

[0058] The specific embodiments of the present application are described in detail above. The above-described embodiments disclosed by the present application are only preferred embodiments of the present application. For those skilled in the art, many modifications and improvements can be made without departing from the concept of the present application. These modifications and improvements fall within the scope of the claims of the present application.

Claims

1. A display module, characterized by The display module comprises: a back plate comprising a bottom plate and a side plate connected to the bottom plate, the bottom plate and the side plate enclosing a receiving cavity; a display panel arranged in the receiving cavity; a polarizing layer arranged on a side of the display panel away from the bottom plate; a control circuit board arranged on a side of the display panel close to the bottom plate; a flexible circuit board electrically connected to the display panel and the control circuit board, a part of the flexible circuit board being located between the side plate and a side wall of the display panel; a first light shielding layer arranged on a side of the polarizing layer facing the flexible circuit board; wherein, in a top view of the display module, the first light shielding layer overlaps with a part of the flexible circuit board located between the side plate and the side wall of the display panel.

2. The display module of claim 1, wherein, The flexible circuit board comprises a first horizontal part, a bending part and a second horizontal part, the first horizontal part being electrically connected to the display panel, the second horizontal part being electrically connected to the control circuit board, and the bending part being located between the side plate and the side wall of the display panel; wherein, in a top view of the display module, the first light shielding layer overlaps with the bending part.

3. The display module of claim 2, wherein, A surface of the first light shielding layer close to the bottom plate is in contact with the first horizontal part.

4. The display module of claim 2, wherein, The display panel comprises an array substrate, a light emitting device layer and an encapsulation layer, the array substrate being arranged on the bottom plate, the light emitting device layer being arranged on a side of the array substrate away from the bottom plate, and the encapsulation layer being arranged on a side of the light emitting device layer away from the bottom plate, a pad being arranged on the array substrate, the first horizontal part being electrically connected to the pad, and a spacing region being arranged between a side wall of a side of the light emitting device layer close to the first horizontal part and a side wall of a side of the first horizontal part close to the light emitting device layer. The display module further comprises a second light shielding layer arranged between the polarizing layer and the encapsulation layer; in a top view of the display module, the second light shielding layer covers at least a part of the spacing region, and a part of the second light shielding layer overlaps with a part of the light emitting device layer.

5. The display module of claim 4, wherein, A part of the second light shielding layer close to the side plate is connected to the first light shielding layer.

6. The display module of claim 4, wherein, The product of the optical density of the first light shielding layer and the thickness of the first light shielding layer is equal to the product of the optical density of the second light shielding layer and the thickness of the second light shielding layer.

7. The display module of claim 1, wherein, An outer edge of the polarizing layer exceeds an edge of the display panel, in a top view of the display module, a part of the first light shielding layer exceeding the edge of the display panel overlaps with the first light shielding layer.

8. The display module of claim 1, wherein, In a top view of the display module, an edge of a side of the polarizing layer close to the side plate is flush with an edge of a side of the flexible circuit board close to the side plate, and a radius of curvature of the bending part of the flexible circuit board is not greater than 1 mm.

9. The display module of claim 4, wherein, A length from an edge of a side of the encapsulation layer close to the side plate to an edge of a side of the polarizing layer close to the side plate is 1.6 mm to 2.1 mm.

10. The display module of claim 1, wherein, In a top view of the display module, an edge of the polarizing layer near a side of the side plate is flush with an edge of the flexible circuit board near the side of the side plate, and a thickness of the flexible circuit board is not greater than 50 μm.

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