CN219737944U - Large-scale LED liquid crystal display - Google Patents
Large-scale LED liquid crystal display Download PDFInfo
- Publication number
- CN219737944U CN219737944U CN202320346138.1U CN202320346138U CN219737944U CN 219737944 U CN219737944 U CN 219737944U CN 202320346138 U CN202320346138 U CN 202320346138U CN 219737944 U CN219737944 U CN 219737944U
- Authority
- CN
- China
- Prior art keywords
- light
- light guide
- liquid crystal
- plate
- led
- 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.)
- Active
Links
- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 57
- 238000009792 diffusion process Methods 0.000 claims abstract description 12
- 230000000694 effects Effects 0.000 claims abstract description 6
- 239000000758 substrate Substances 0.000 claims description 7
- 230000004907 flux Effects 0.000 abstract description 2
- 230000003044 adaptive effect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 3
- 239000011159 matrix material Substances 0.000 description 3
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Planar Illumination Modules (AREA)
Abstract
The utility model discloses a large-scale LED liquid crystal display screen, which comprises a frame shell, a liquid crystal plate, a light diffusion plate and a light guide plate, wherein the frame shell is in a concave structure; the liquid crystal panel and the frame shell form the appearance structure of the whole display screen and form an electric appliance cavity; the LED light sources are arranged at the bottom of the electric appliance cavity, and the three light guide strips are arranged at the left side, the right side and the top side of the electric appliance cavity in an adaptive manner; the liquid crystal plate, the light condensing plate and the light guide plate are laminated and laminated from outside to inside in sequence. The display screen is provided with the light guide strips on the left side, the right side and the top side of the electric appliance cavity of the frame shell, yu Guangjing light scattered by the side edges of the light guide plate can be reflected and then is incident into the light guide plate again, and the light is emitted from the light emitting surface of the light guide plate, so that the light flux emitted from the light guide plate is improved, the light loss is reduced, and the effect of improving the brightness of the LED liquid crystal display screen is achieved.
Description
Technical Field
The utility model relates to the technical field of display screen preparation, in particular to a large-sized LED liquid crystal display screen.
Background
With the development of liquid crystal technology, large-size liquid crystal display screens are widely applied to outdoor advertising, conference video and/or sports meeting place video playing, science popularization propaganda and the like. However, such LED liquid crystal display panels have a problem of insufficient luminance.
Disclosure of Invention
Accordingly, the present utility model is directed to a large-sized LED liquid crystal display capable of enhancing brightness.
The technical scheme of the utility model is as follows:
a large-scale LED liquid crystal display screen comprises a frame shell with a concave structure, a liquid crystal plate, a light diffusion plate and a light guide plate; the liquid crystal panel and the frame shell form an appearance structure of the whole display screen and form an electric appliance cavity; the bottom of the electric appliance cavity is provided with an LED light source, and the left side, the right side and the top side of the electric appliance cavity are respectively provided with a light guide strip; the liquid crystal display device comprises a liquid crystal plate, a light diffusion plate and a light guide plate, wherein the liquid crystal plate, the light diffusion plate and the light guide plate are sequentially laminated from outside to inside, the light diffusion plate and the light guide plate are arranged in the electric appliance cavity, and a light emitting surface and four side surfaces of the light guide plate are respectively matched and attached with the liquid crystal plate, the light guide strip and the LED light source.
The large-scale LED liquid crystal display screen comprises a light guide plate, wherein the light guide plate comprises a light guide matrix, a light reflecting film is arranged on the back surface of the light guide matrix, and a plurality of light guide columns or light guide convex points which are arranged in an array are arranged on the light emitting surface of the light guide matrix.
The large-sized LED liquid crystal display screen is characterized in that the appearance of the light emitting surface of each light guide column or each light guide bump is in a spherical structure.
The large-scale LED liquid crystal display screen is characterized in that the LED light source is a plurality of LED light bars which are linearly arranged and distributed.
The large-sized LED liquid crystal display screen is characterized in that the LED lamp strip is one strip, and the length of the LED lamp strip is consistent with the length of the bottom side edge of the light guide plate.
The large-scale LED liquid crystal display screen, wherein, the LED lamp strip is more than two, and all LED lamp strips are in the bottom of electrical apparatus chamber is along sharp series connection setting, and the whole length of this LED lamp strip with the length of the bottom side of light guide plate is unanimous.
The large-sized LED liquid crystal display screen is characterized in that a condensing plate with a condensing function is further arranged between the liquid crystal plate and the light diffusion plate.
The large-scale LED liquid crystal display screen comprises two condensing plates, namely a primary condensing plate and a secondary condensing plate.
According to the large-sized LED liquid crystal display screen provided by the utility model, the light guide strips are respectively arranged at the left side, the right side and the top side of the electric appliance cavity of the frame shell, and can reflect Yu Guangjing light scattered out of the side edges of the light guide plate and then enter the light guide plate again, and the light is emitted out of the light emitting surface of the light guide plate, so that the light emitting flux on the light guide plate is improved, the light loss is reduced, and the effect of improving the brightness of the LED liquid crystal display screen is achieved.
Drawings
FIG. 1 is a schematic diagram of an assembly structure of an outdoor large LED LCD in an embodiment;
FIG. 2 is a schematic diagram of an assembly structure of an outdoor large LED liquid crystal display in another embodiment;
FIGS. 3a and 3b are schematic diagrams of a light guide plate structure in a display screen, respectively;
FIG. 4 is a schematic view of a light guide bar in a display screen;
fig. 5 is a cross-sectional view of a condensing plate structure.
Detailed Description
The preferred embodiments of the present utility model will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1 and 4, a large-sized liquid crystal LED display 10 according to an embodiment of the present utility model includes a frame case 100 having a concave configuration, a liquid crystal panel 140, a light diffusion plate 130, and a light guide plate 120; the liquid crystal panel 140 and the frame housing 100 are covered and sealed to form the overall appearance of the display screen 10 and form an electrical cavity 101. An LED light source 110 is disposed at the bottom 102 of the electrical cavity 101, and light guide bars 150 are disposed on three inner sides of the left side 104, the right side 105, and the top side of the electrical cavity 101, respectively. The light guide plate 120 is disposed in the electrical cavity 101, and the light emitting surface and the four sides of the light guide plate 120 are respectively fit with the liquid crystal panel 140, the light guide strip 104 and the LED light source 110; the light-diffusing plate 120 is attached between the liquid crystal panel 140 and the light-guiding plate 120, and the light-diffusing plate 130 is used to diffuse as much as possible the light emitted from the light-guiding plate 120 and then enter the liquid crystal panel 140 to be absorbed by the liquid crystal panel 140. And a control circuit board (not shown) for driving the liquid crystal panel 140, the LED light source 110, and other electrical components is accommodated in the electrical cavity 101 and is disposed at the back of the light guide plate 120.
In this embodiment, the liquid crystal LED display 10 has a square planar structure, so that the selected frame housing 100, the liquid crystal panel 140, the light-diffusing plate 130 and the light-guiding plate 120 have square planar structures; in other embodiments, the frame case 100, the liquid crystal panel 140, the light diffusion plate 130 and the light guide plate 120 are selected to have a curved square configuration, so-called curved display screen, if they are all of a curved square configuration.
As shown in fig. 3a and 3b, the light guide plate 120 includes a light guide substrate 122, a reflective film 123 is disposed on the back surface of the light guide substrate 122, and a plurality of light guide columns 121 or light guide bumps 121 'are disposed on the light exit surface of the light guide substrate 122, where the light guide columns 121 or light guide bumps 121' are distributed in an array. The light-emitting surface of each light-guiding column 121 or light-guiding bump 121' has a spherical configuration, and this structure can collect the emitted light. The light guide column 121 may further collect the light emitted from the light guide substrate 122 to enhance the light collecting effect of the light guide column 121.
As shown in fig. 1, the LED light source 110 is an LED light bar with a plurality of LEDs arranged in a linear arrangement. When the length of the liquid crystal LED display 10 is relatively smaller, the LED lamps may be uniformly distributed in a plurality of lines, or may be arranged in two or more lines; the length of the LED light bar is consistent with the length of the bottom side of the light guide plate 120, so as to ensure that the light emitted by the LED light source 110 is incident into the light guide plate 120 as much as possible, thereby avoiding light waste.
If the length of the liquid crystal LED display 10 is relatively large, for convenience in installation and maintenance, at this time, the LED light bars 110 are more than two, all the LED light bars 110 are connected in series along a straight line at the bottom of the electrical cavity 101, and the overall length of the LED light bars 110 is consistent with the length of the bottom side edge of the light guide plate 120.
In another embodiment, as shown in fig. 2 and 5, a light condensing plate 160 having a light condensing effect is further provided between the liquid crystal panel 140 and the light diffusing plate 130, and the light condensing plate 160 is a light transmitting plate having a flat plate shape on the surface and a convex lens shape 1601 inside. The light emitted from the light-diffusing plate 120 is converged again and then emitted to the liquid crystal panel 140, so as to achieve the functions of condensing light and improving brightness. Preferably, in some large-sized lcd panels, the condensing effect of one panel 160 does not reach the corresponding brightness, and at this time, it is necessary to laminate and attach a plurality of panels 160 to achieve condensing. In this embodiment, the number of the condensing panels 160 is two, and the condensing panels are divided into a primary condensing panel 161 and a secondary condensing panel 162; the primary condensing plate 161 and the secondary condensing plate 162 may be identical, or may be provided with different thicknesses, different focal lengths of the internal convex lenses 1601, or the like, as required.
It is to be understood that the foregoing description of the preferred embodiments of the utility model is not to be considered as limiting the scope of the utility model, which is defined by the appended claims.
Claims (8)
1. The large LED liquid crystal display screen is characterized by comprising a frame shell with a concave structure, a liquid crystal plate, a light diffusion plate and a light guide plate; the liquid crystal panel and the frame shell form an appearance structure of the whole display screen and form an electric appliance cavity; the bottom of the electric appliance cavity is provided with an LED light source, and the left side, the right side and the top side of the electric appliance cavity are respectively provided with a light guide strip; the liquid crystal display device comprises a liquid crystal plate, a light diffusion plate and a light guide plate, wherein the liquid crystal plate, the light diffusion plate and the light guide plate are sequentially laminated from outside to inside, the light diffusion plate and the light guide plate are arranged in the electric appliance cavity, and a light emitting surface and four side surfaces of the light guide plate are respectively matched and attached with the liquid crystal plate, the light guide strip and the LED light source.
2. The large-scale LED liquid crystal display of claim 1, wherein the light guide plate comprises a light guide substrate, a reflective film is disposed on the back surface of the light guide substrate, and a plurality of light guide columns or light guide bumps are disposed on the light exit surface of the light guide substrate.
3. The large-sized LED liquid crystal display according to claim 2, wherein the light emitting surface of each of the light guide posts or the light guide bumps has a spherical configuration.
4. The large-scale LED liquid crystal display of claim 1, wherein the LED light source is a plurality of LED light bars arranged in a linear arrangement.
5. The large-sized LED lcd panel of claim 4, wherein the LED light bar has a length corresponding to a length of the bottom side of the light guide plate.
6. The large-sized LED lcd panel of claim 4, wherein the LED light bars are two or more, all the LED light bars are connected in series along a straight line at the bottom of the electrical cavity, and the overall length of the LED light bars is identical to the length of the bottom side edge of the light guide plate.
7. The large-sized LED liquid crystal display according to claim 1, wherein a condensing plate having a condensing effect is further provided between the liquid crystal panel and the light diffusing plate.
8. The large-sized LED lcd panel of claim 7, wherein the number of the condensing panels is two, and is divided into a primary condensing panel and a secondary condensing panel.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2022206931929 | 2022-03-28 | ||
| CN202220693192 | 2022-03-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219737944U true CN219737944U (en) | 2023-09-22 |
Family
ID=88030916
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320346138.1U Active CN219737944U (en) | 2022-03-28 | 2023-02-22 | Large-scale LED liquid crystal display |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219737944U (en) |
-
2023
- 2023-02-22 CN CN202320346138.1U patent/CN219737944U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7374312B2 (en) | Bottom lighting backlight module having uniform illumination and process for manufacturing the same | |
| RU2496050C2 (en) | Lighting device, display device and television receiver | |
| EP2943838B1 (en) | Diffusing of direct backlight for a display panel | |
| KR100714209B1 (en) | Surface light source device and liquid crystal display device using it | |
| CN1021603C (en) | Liquid crystal display illumination system | |
| US8641219B1 (en) | High efficiency rear lit waveguide | |
| CN101510027B (en) | Liquid crystal display apparatus | |
| KR101167301B1 (en) | Back light unit of liquid crystal display device | |
| KR100814559B1 (en) | Backlight device and liquid crystal apparatus | |
| CN106932958B (en) | Backlight unit and liquid crystal display device including the same | |
| US20050259195A1 (en) | Display device and backlight device | |
| US20070189032A1 (en) | Backlight system | |
| US20160291397A1 (en) | Display device | |
| JP2004206916A (en) | Planar light source | |
| EP2426747A1 (en) | Light emitting module, illuminating device, display device, and television receiver | |
| JP2012529670A (en) | Flat panel optical display system with high control output | |
| CN215526298U (en) | Backlight module and display device | |
| CN103930712A (en) | Illumination device, backlight, liquid-crystal display, and television receiver | |
| KR100838332B1 (en) | Back light unit for flat-panel display | |
| WO2012164791A1 (en) | Surface light source and liquid crystal display device | |
| CN219737944U (en) | Large-scale LED liquid crystal display | |
| US6429581B1 (en) | TIR lens for uniform brightness | |
| CN112241084A (en) | Thin liquid crystal display backlight illuminating system with directivity | |
| KR20060063669A (en) | Diffusion ray collection material and surface light source device comprising the same | |
| CN102425740A (en) | Backlight module and display device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |