WO2018184253A1 - 液晶显示器 - Google Patents
液晶显示器 Download PDFInfo
- Publication number
- WO2018184253A1 WO2018184253A1 PCT/CN2017/080555 CN2017080555W WO2018184253A1 WO 2018184253 A1 WO2018184253 A1 WO 2018184253A1 CN 2017080555 W CN2017080555 W CN 2017080555W WO 2018184253 A1 WO2018184253 A1 WO 2018184253A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- crystal display
- liquid crystal
- middle frame
- silica gel
- backlight module
- Prior art date
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Classifications
-
- 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
- G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
-
- 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
- G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
- G02F1/133317—Intermediate frames, e.g. between backlight housing and front frame
-
- 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
- G02F2202/00—Materials and properties
- G02F2202/28—Adhesive materials or arrangements
Definitions
- the present application relates to a liquid crystal display, and more particularly to a liquid leakage display that prevents light leakage.
- liquid crystal displays have gradually replaced traditional anode ray tube displays due to their superior characteristics such as slimness, low power consumption and no radiation.
- a liquid crystal display mainly consists of a liquid crystal display panel (Open Cell), a backlight module, a middle frame, and a front frame.
- Open Cell liquid crystal display panel
- the process of liquid crystal display panels has a trend toward narrow borders or no borders, and the requirements for assembly of the whole machine are increasingly strict, especially when designing narrow frames or borderless with curved panels, middle frames and backlight modules and liquid crystal display panels. Light leakage is easy to occur after assembly.
- the prior art practice has the following problems: when using a screw to lock the middle frame and the aluminum back plate, the screw needs to penetrate the foam and the black conductive tape, so that the black conductive tape or the foam will fall off or be broken or left. On the screw thread, the assembly yield of the liquid crystal display is seriously affected; the assembly of the middle frame and the aluminum back plate requires extra manpower to be covered with black conductive tape and a circle of foam around the aluminum back plate, and it still needs dozens of screws.
- the locking step causes high process complexity and waste of a large amount of human resources; although there is a black conductive adhesive cloth between the middle frame and the aluminum back plate as a light leakage preventing structure, the black conductive adhesive tape may crack at a high temperature, and An additional circle of foam is required, and the gap between the middle frame and the aluminum back plate is too large, so that the light leakage phenomenon of the liquid crystal display panel is more serious.
- an object of the present application is to provide a liquid crystal display, and more particularly to a light leakage prevention liquid crystal display.
- the application provides a liquid crystal display comprising:
- a backlight module includes a backlight module and a backboard carrying the backlight module
- liquid crystal display panel joined to the back sheet via a partition
- a dark-colored or opaque adhesive is adhered between the middle frame and the back plate.
- the adhesive placed between the middle frame and the backing plate is a black silica gel.
- the black silica gel has a thickness of 0.3 mm.
- the black silica gel is placed between the middle frame and the back plate by a dispensing process.
- the black silica gel has an optical density value between 2/0.8 ⁇ m and 2/0.2 ⁇ m.
- the black silica gel preferably has an optical density value of 2/0.5 ⁇ m.
- the backlight module includes a diffusion sheet, a diamond lens, and a reflective brightness enhancement film, which are sequentially stacked on the back plate.
- a bonding tape is further bonded to the liquid crystal display panel and the spacer.
- the partition plate is integrally formed with the middle frame, and is formed to extend from the middle frame toward a direction between the back plate and the liquid crystal display panel.
- a liquid crystal display including:
- a backlight module includes a backlight module and an aluminum back plate carrying the backlight module, and the backlight module includes at least one diffusion sheet, a diamond lens, and a reflective brightness enhancement film, which are sequentially stacked Aluminum back plate;
- liquid crystal display panel bonded to the aluminum backing plate via a partition
- a dark-colored or opaque adhesive is placed between the middle frame and the aluminum backing plate by using a dispenser dispensing process, so that the middle frame is bonded to the aluminum backing plate, and
- the partition plate is integrally formed with the middle frame, and is formed to extend from the middle frame toward a direction between the aluminum back plate and the liquid crystal display panel.
- the dark-colored adhesive placed between the middle frame and the aluminum backing plate is a black silica gel.
- the black silica gel has a thickness of 0.3 mm.
- the black silica gel is placed between the middle frame and the aluminum backing plate by a dispensing machine.
- the black silica gel has an optical density value between 2/0.8 ⁇ m and 2/0.2 ⁇ m.
- the black silica gel preferably has an optical density value of 2/0.5 ⁇ m.
- a bonding tape is bonded to the liquid crystal display panel and the spacer.
- the bonding tape is a bond of a double-sided tape, a foam tape, or a light-shielding tape.
- the application of black silica gel in place of the exemplary conductive adhesive and foam mainly has the following advantages: the strength of the black silica gel after curing can reach 2 MPa or more after the reliability analysis (RA) test, therefore, It is only necessary to use 8 to 12 screws to lock the middle frame and the back plate, which effectively reduces the problem that the prior art requires a lot of manual assembly; since the black silica gel has adhesion and ductility, it can be improved. There is a problem that the conductive paste and the foam cause the contamination of the glue to fall, and the complicated steps of attaching the conductive glue and the foam are omitted, and the production efficiency of the liquid crystal display is improved; the black silica gel is made of black material. Glue The material can reduce the gap between the middle frame and the back plate, effectively preventing the problem of light leakage on the side of the liquid crystal display.
- RA reliability analysis
- FIG. 1 is a partial structural schematic view of an exemplary liquid crystal display.
- FIG. 2 is a partial schematic structural view of a liquid crystal display device according to an embodiment of the present application.
- FIG. 3 is a partial schematic structural view of a liquid crystal display according to another embodiment of the present application.
- the word “comprising” is to be understood to include the component, but does not exclude any other component.
- “on” means located above or below the target component, and does not mean that it must be on the top based on the direction of gravity.
- FIG. 1 is a partial structural diagram of an exemplary liquid crystal display.
- the liquid crystal display 1 includes a backlight module 2, a liquid crystal display panel 3, and a middle frame 4.
- the backlight module 2 is composed of a backlight module 21 (Back Light Module) and an aluminum back plate 22.
- the backlight module 21 includes a diffuser sheet, a prism sheet, and a reflective brightness enhancing film.
- the exemplary liquid crystal display 1 assembly method is to first combine the aluminum back plate 22 of the backlight module 2 with the spacer 5, and then bond the spacer 5 to the liquid crystal display panel 3 via the adhesive 6, wherein the adhesive 6 can be double-sided.
- Adhesives such as tape, foam tape or light-shielding tape; then, the periphery of the aluminum backing plate 22 is covered with a black conductive adhesive tape 7 to achieve a light-proof effect; and then between the middle frame 4 and the black conductive adhesive tape 7 With a circle of foam 8, since the liquid crystal display 1 is at a high temperature, the black conductive adhesive tape 7 between the aluminum back plate 22 and the middle frame 4 is liable to form a crack, and the above-mentioned foam 8 functions to prevent black. The phenomenon that the conductive adhesive tape 7 is cracked, so that the combination of the middle frame 4 and the aluminum back plate 22 More closely; finally, the middle frame 4, the foam 8, the black conductive adhesive tape 7, and the aluminum back plate 22 are locked by using dozens of screws.
- FIG. 2 is a partial schematic structural diagram of a liquid crystal display device 10 according to an embodiment of the present application.
- the liquid crystal display 10 includes at least a backlight module 2, a liquid crystal display panel 3, and a middle frame 4.
- the backlight module 2 includes a backlight module (Back Light Module) 21 and a backplane 22 that carries the backlight module 21.
- the back panel 22 can be, for example, an aluminum back panel, and the backlight module 21 is a diffusion sheet.
- the (Diffuse Sheet), the prism sheet, and the reflective brightness enhancing film are sequentially stacked on the back sheet 22.
- the liquid crystal display panel 3 is bonded to the backing plate 22 via the separator 5.
- the liquid crystal display 10 is assembled by first combining the back plate 22 of the backlight module 2 with the spacer 5, and then bonding the spacer 5 to the liquid crystal display panel 3 via the bonding tape 6, wherein the bonding is performed.
- the adhesive tape 6 can be a double-sided adhesive tape, a foaming tape or a light-shielding adhesive; then, using a dispensing machine, a dark or opaque adhesive is contained in the dispensing head 50, the deep
- the color adhesive can be black silica gel 30, and the time, temperature, output and other parameters are controlled, and an appropriate amount of black silica gel 30 is output from the output hole 51 to be placed between the middle frame 4 and the back plate 22, so that the middle frame 4 and The backing plate 22 is bonded.
- the black silica gel 30 is a high-temperature colloid in the dispensing head 50.
- a thin layer of adhesive having a thickness of 0.2 mm to 0.5 mm is formed between the middle frame 4 and the back plate 22.
- the preferred thickness is 0.3 mm.
- the optical density (OD) value of the black silica gel 30 is between 2/0.8 ⁇ m and 2/0.2 ⁇ m, and the preferred optical density value is 2/0.5 ⁇ m, which can effectively solve the light leakage of the liquid crystal display 10 side. The problem.
- the middle frame 4 and the back plate 22 are locked by inserting the middle frame 4, the black silicone 30 and the back plate 22 with a plurality of screws, thereby completing the assembly of the liquid crystal display 10 of the present application.
- FIG. 3 is a partial structural diagram of a liquid crystal display 20 according to another embodiment of the present application.
- the liquid crystal display 20 includes at least a backlight module 2, a liquid crystal display panel 3, and a middle frame 40.
- the backlight module 2 includes a backlight module (Back Light Module) 21 and a backplane 22 that carries the backlight module 21.
- the back panel 22 can be, for example, an aluminum back panel, and the backlight module 21 is a diffusion sheet.
- the (Diffuse Sheet), the prism sheet, and the reflective brightness enhancing film are sequentially stacked on the back sheet 22.
- the liquid crystal display panel 3 is connected to the back plate 22 via the spacer 41.
- the spacer 41 and the middle frame 40 of the present embodiment are integrally formed, and the middle frame 40 faces the back plate 22 and the liquid crystal display panel 3. The direction between them extends.
- the liquid crystal display device 20 is assembled by first combining the back plate 22 of the backlight module 2 with the spacer 41, and then bonding the spacer 41 to the liquid crystal display panel 3 via the bonding tape 6, wherein the bonding is performed.
- the adhesive tape 6 can be a double-sided adhesive tape, a foam adhesive tape or a light-shielding adhesive; then, using a dispensing machine, the dark adhesive can be contained in the dispensing head 50, and the dark adhesive can be It is a black silica gel 30, and controls the parameters such as time, temperature, output, etc., and outputs an appropriate amount of black silica gel 30 from the output hole 51 to be placed between the middle frame 40 and the back plate 22, so that the middle frame 40 and the back plate 22 are bonded.
- the black silica gel 30 is a high-temperature colloid in the dispensing head 50. After outputting from the output hole 51 in an appropriate amount, it will be in the middle frame 40 and the back plate. A thin layer of adhesive having a thickness of between 0.2 mm and 0.5 mm is formed between the two layers, preferably having a thickness of 0.3 mm. After cooling, the middle frame 40 and the backing plate 22 are bonded, and the middle frame 40 and the back plate 22 are reduced. The distance between the spacers 41 and the middle frame 40 is integrally formed, so that the problem of light leakage on the side of the liquid crystal display 20 is effectively solved.
- the optical density (OD) value of the black silica gel 30 is between 2/0.8 ⁇ m and 2/0.2 ⁇ m, and the preferred optical density value is 2/0.5 ⁇ m, which can effectively solve the light leakage of the liquid crystal display 20 side. The problem.
- the middle frame 40 and the back plate 22 are locked by inserting the middle frame 40, the black silicone 30 and the back plate 22 with a plurality of screws, thereby completing the assembly of the liquid crystal display 20 of the embodiment.
- the prior art conductive tape and foam are replaced by black silica gel 30, which can be applied not only to the process of the narrow-framed liquid crystal display panel, but also to the flexible TFT liquid crystal display. In the process.
- the application of black silica gel in place of the exemplary conductive adhesive and foam has the following advantages: the strength of the black silica gel 30 after curing can be more than 2 MPa after the reliability analysis (RA) test, therefore, only need to use 8 to 12 screws lock the middle frame 4, 40 and the back plate 22, which effectively reduces the problem of requiring a large amount of manual assembly in the prior art; since the black silicone 30 has adhesion and ductility, it can improve the prior art to conduct electricity.
- RA reliability analysis
- the black silica gel 30 is a black material, and The gap between the middle frame 4, 40 and the back plate 22 can be reduced, and the problem of light leakage on the side of the liquid crystal display can be effectively prevented.
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- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Liquid Crystal (AREA)
Abstract
Description
Claims (15)
- 一种液晶显示器,包括:一中框;一背光模块,包含一背光模组和承载所述背光模组的背板;一液晶显示面板,经由一隔板与所述背板接合;其中,所述中框与所述背板之间置入一深色系或不透光的黏胶黏合。
- 如权利要求1所述的液晶显示器,其中,所述黏胶为一黑色硅胶。
- 如权利要求2所述的液晶显示器,其中,所述黑色硅胶的厚度为0.3mm。
- 如权利要求2所述的液晶显示器,其中,所述黑色硅胶为利用一点胶机点胶工艺置入所述中框与所述背板之间。
- 如权利要求2所述的液晶显示器,其中,所述黑色硅胶的光密度值介于2/0.8μm~2/0.2μm之间。
- 如权利要求5所述的液晶显示器,其中,所述黑色硅胶的光密度值为2/0.5μm。
- 如权利要求1所述的液晶显示器,其中,所述背光模组包括一扩散片、一菱镜片、一反射式增亮膜,依序迭置于所述背板上。
- 如权利要求1所述的液晶显示器,还包括一接合胶带粘接所述液晶显示面板与所述隔板。
- 如权利要求1所述的液晶显示器,其中,所述隔板与所述中框为一体成型。
- 如权利要求9所述的液晶显示器,其中,所述隔板自所述中框朝向所述背板与所述液晶显示面板之间的方向延伸形成。
- 一种液晶显示器,包括:一中框;一背光模块,包含一背光模组和承载所述背光模组的铝背板,所述背光模组至少包括一扩散片、一菱镜片、一反射式增亮膜,依序迭置于所述铝背板上;一液晶显示面板,经由一隔板与所述铝背板接合;其中,利用一点胶机点胶工艺置入一深色系或不透光的黏胶于所述中框与所述铝背板之间,使得所述中框与所述铝背板黏合;所述隔板与所述中框为一体成型,自所述中框朝向所述铝背板与所述液晶显示面板之间的方向延伸形成;所述深色系黏胶为一黑色硅胶。
- 如权利要求11所述的液晶显示器,其中,所述黑色硅胶的光密度值介于2/0.8μm~2/0.2μm之间。
- 如权利要求12所述的液晶显示器,其中,所述黑色硅胶的光密度值为2/0.5μm。
- 如权利要求11所述的液晶显示器,还包括一接合胶带粘接所述液晶显示面板与所述隔板。
- 如权利要求14所述的液晶显示器,其中,所述接合胶带为双面胶带、泡棉胶带或遮光胶带的黏接物。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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US15/555,412 US20180292701A1 (en) | 2017-04-05 | 2017-04-14 | Liquid crystal display |
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CN201710218564.6 | 2017-04-05 | ||
CN201710218564.6A CN106950737A (zh) | 2017-04-05 | 2017-04-05 | 液晶显示器 |
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PCT/CN2017/080555 WO2018184253A1 (zh) | 2017-04-05 | 2017-04-14 | 液晶显示器 |
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WO (1) | WO2018184253A1 (zh) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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US20230367408A1 (en) * | 2021-01-28 | 2023-11-16 | Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd. | Display device |
Families Citing this family (4)
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CN107255880A (zh) * | 2017-08-11 | 2017-10-17 | 青岛恒泰机械配件有限公司 | 一种智能电视的铝塑背板和中框的组装工艺方法 |
CN109166464B (zh) * | 2018-11-07 | 2021-07-23 | 惠科股份有限公司 | 固定治具、显示装置生产工艺及显示装置 |
CN113867033B (zh) * | 2021-09-15 | 2024-03-19 | 惠科股份有限公司 | 显示模组和显示模组的安装方法 |
CN114839814B (zh) * | 2022-07-05 | 2022-12-06 | 惠科股份有限公司 | 背光模组、显示装置以及显示装置的组装方法 |
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- 2017-04-14 WO PCT/CN2017/080555 patent/WO2018184253A1/zh active Application Filing
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JP2000147497A (ja) * | 1998-11-12 | 2000-05-26 | Enplas Corp | サイドライト型面光源装置及び液晶表示装置 |
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US20230367408A1 (en) * | 2021-01-28 | 2023-11-16 | Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd. | Display device |
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