CN111061076A - Transparent LCD display device - Google Patents
Transparent LCD display device Download PDFInfo
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- CN111061076A CN111061076A CN201911109883.9A CN201911109883A CN111061076A CN 111061076 A CN111061076 A CN 111061076A CN 201911109883 A CN201911109883 A CN 201911109883A CN 111061076 A CN111061076 A CN 111061076A
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- transparent
- guide plate
- light guide
- toughened glass
- transparent light
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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
- G02F1/133382—Heating or cooling of liquid crystal cells other than for activation, e.g. circuits or arrangements for temperature control, stabilisation or uniform distribution over the cell
- G02F1/133385—Heating or cooling of liquid crystal cells other than for activation, e.g. circuits or arrangements for temperature control, stabilisation or uniform distribution over the cell with cooling means, e.g. fans
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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
- G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
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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
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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
- G02F1/1339—Gaskets; Spacers; Sealing of cells
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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
- G02F1/133302—Rigid substrates, e.g. inorganic substrates
Abstract
The invention relates to a transparent LCD display device, which comprises a display screen and a frame arranged outside the display screen, wherein the display screen comprises a transparent light guide plate, first toughened glass arranged in parallel on the front side of the transparent light guide plate and second toughened glass arranged in parallel on the rear side of the transparent light guide plate; the inboard of first toughened glass is equipped with transparent LCD screen, all be equipped with the clearance between LCD screen and the transparent light guide plate and between second toughened glass and the transparent light guide plate, the edge of transparent light guide plate still is equipped with the LED light source. The transparent LCD display device has simple structure and lower cost, and can more clearly display screen information. The heat that the LED light source sent can be dispelled through the heat conduction cushion, plays sealed inside components and parts and avoids its oxidation ageing, has also kept apart glass and metal center simultaneously and has taken place hard to bump hard, prevents that glass and frame collision from causing glass damage, plays the sealed effect of taking precautions against earthquakes.
Description
Technical Field
The invention relates to an LED display device, in particular to a transparent LCD display device.
Background
With the continuous development of the LED technology, the transparent LED display screen is widely used in high-speed rail, shop window display, fence display, special cabinet display, museum, zoo, and other places. However, the existing transparent display generally adopts transparent LED display or transparent OLED display, adopts transparent LED display, has rough image quality, large quantity of LEDs arranged in quantity, very large power consumption and poor visual effect, can not be watched in a short distance, and is not transparent display in the true sense; and the transparent OLED is adopted for display, so that the production yield is low, the cost is high, the civil use is not practical basically, the commercial value is very low, and the market acceptance is low.
Disclosure of Invention
The invention aims to provide a transparent LCD display device which has the advantages of simple structure, lower cost, high production qualification rate and capability of displaying screen information more clearly.
In order to achieve the purpose, the invention adopts the following technical scheme:
a transparent LCD display device comprises a display screen and a frame arranged on the outer side of the display screen, wherein the display screen comprises a transparent light guide plate, first toughened glass arranged on the front side of the transparent light guide plate in parallel and second toughened glass arranged on the rear side of the transparent light guide plate in parallel; the inboard of first toughened glass is equipped with transparent LCD screen, all be equipped with the clearance between LCD screen and the transparent light guide plate and between second toughened glass and the transparent light guide plate, the edge of transparent light guide plate still is equipped with the LED light source.
As a further improvement of the above technical solution:
the second toughened glass is semi-transparent semi-reflective toughened glass, the thickness of the second toughened glass is 0.1-20mm, and the distance between the second toughened glass and the transparent light guide plate is less than 0.05 mm.
The inner side of the second toughened glass is provided with a plurality of transparent salient points, the diameter of each salient point is 0.05-1mm, and the height of each salient point is 0.05-1 mm.
The rear side of the transparent light guide plate is provided with a plurality of transparent smooth concave mesh points, the diameter of each concave mesh point is 0.01-0.3mm, the depth of each concave mesh point is 0.01-0.1mm, the angle of the concave bottom of each concave mesh point is 60-170 degrees, and the distance between every two adjacent concave mesh points is 0.1-6 mm.
One side of the transparent liquid crystal screen, which faces the transparent light guide plate, is provided with a plurality of transparent bulges, the diameters of the bulges are 0.05-1mm, and the heights of the bulges are 0.05-1 mm.
The transmission rate of the salient points is more than 60%, and the transmission rate of the bulges is more than 60%.
The frame is including setting up the last casing and the lower casing of both ends face about the display screen, go up the casing and be equipped with the draw-in groove that is used for installing first toughened glass, transparent light guide plate and second toughened glass on the casing down respectively, first toughened glass, transparent light guide plate and second toughened glass with be equipped with the heat conduction cushion between the draw-in groove.
The LED light sources are respectively arranged at the top, the left side and the right side of the transparent light guide plate, the bottom of the transparent light guide plate is provided with a reflecting layer, and the reflectivity of the reflecting layer is greater than 80%.
The distance between the transparent liquid crystal screen and the transparent light guide plate is less than 0.5 mm.
According to the technical scheme, the transparent LCD display device is simple in structure, low in cost and capable of displaying screen information more clearly. The heat that the LED light source sent can be dispelled through the heat conduction cushion, and sealed inside components and parts are oxidation ageing simultaneously, have also kept apart glass and metal center and have taken place hard to bump hard, prevent that glass and frame collision from causing glass damage, play the sealed effect of taking precautions against earthquakes.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a cross-sectional view of the present invention.
Detailed Description
The invention is further described below with reference to the accompanying drawings:
example 1
As shown in fig. 1-2, in the transparent LCD display device of the present embodiment, a display screen 1 and a frame 2 are disposed outside the display screen 1, where the display screen 1 includes a transparent light guide plate 11, a first tempered glass 12 disposed in parallel on a front side of the transparent light guide plate 11, and a second tempered glass 13 disposed in parallel on a rear side of the transparent light guide plate 11; the inner side of the first tempered glass 12 is provided with a transparent liquid crystal screen 14, gaps 15 are respectively arranged between the liquid crystal screen 14 and the transparent light guide plate 11 and between the second tempered glass 13 and the transparent light guide plate 11, the edge of the transparent light guide plate 11 is also provided with an LED light source 16, and the LED light source 16 can be arranged on the periphery of the light guide plate 11 and can also be arranged on a plurality of surfaces so as to provide light sources for the light guide plate 11. In order to improve the display effect of the display panel, in this embodiment, it is preferable that the LED light sources 16 are disposed on three surfaces of the top, the left side and the right side of the light guide plate 11, the reflective layer 4 is disposed on the bottom of the light guide plate 11, and the reflectivity of the reflective layer 4 is 85%.
The gap 15 can form an air layer having a refractive index smaller than that of the transparent light guide plate 11 to improve the light extraction efficiency of the light guide plate 11, and the gap between the air layers is 0.001mm to prevent the transparent light guide plate 11 from contacting the two light surfaces and to prevent newton's rings from being generated. The LEDs provide light sources, and the transparent light guide plate 11 provides the point light sources of the LEDs to the transparent liquid crystal panel as surface light sources. The mesh points and the surface of the transparent light guide plate 11 are smooth, so that light scattering is reduced, and the light can be accurately projected onto a transparent liquid crystal screen. The transparent light guide plate 11 is made of glass having a transmittance of 70%. The LED light source adopted by the embodiment adopts three-edge light incidence, and the three-edge light incidence is close to the light incidence end face of the transparent light guide plate 11, so that the maximum receiving brightness is achieved.
As shown in fig. 2, the frame 2 of this embodiment includes an upper casing 21 and a lower casing 22 disposed on the upper and lower end faces of the display screen 1, the upper casing 21 and the lower casing 22 are respectively provided with a clamping groove for installing the first tempered glass 12, the transparent light guide plate 11 and the second tempered glass 13, the heat conducting soft pad 3 is installed in the clamping groove, and the first tempered glass 12, the transparent light guide plate 11 and the second tempered glass 13 are fixed in the clamping groove through the heat conducting soft pad 3. The heat conducting soft cushion 3 can dissipate heat emitted by the LED light source, simultaneously seals the internal elements for oxidation and aging, and also separates hard collision between the glass and the metal middle frame, thereby preventing the glass from being damaged due to collision between the glass and the frame 2 and playing the role of shockproof sealing. The frame 2 is made of metal and is used for supporting the display screen to play a role in fixing and supporting.
The second toughened glass 13 of this embodiment adopts the semi-transparent semi-reflecting toughened glass between the thickness is 0.1mm, and this semi-transparent semi-reflecting toughened glass plays the guard action, has transparency and reflection action again, can reflect the light-emitting at the back again to light guide plate 11 on to increase the luminance of display screen. A plurality of transparent bumps 17 are arranged on the inner side of the second tempered glass 13, the diameter of each bump 17 is 0.05mm, the height of each bump 17 is 0.05mm, and the transmittance of each bump 17 is 70%. The rear side of the transparent light guide plate 11 is provided with a plurality of transparent smooth concave mesh points 111, the diameter of the concave mesh points 111 is 0.01mm, the depth of the concave mesh points 111 is 0.01mm, the angle of the concave bottom is 60 degrees, and the distance between adjacent concave mesh points 111 is 0.1 mm. The non-dot surface of the transparent light guide plate 11 and the transparent liquid crystal panel 14 are close together to provide brightness to the transparent display panel, so that the picture displayed by the transparent LCD can be clearly seen. The transparent light guide plate 11 has a refractive index greater than that of an external medium, thereby improving light conductivity.
A plurality of transparent protrusions 18 are arranged on one side of the transparent liquid crystal screen 14 facing the transparent light guide plate 11, the diameter of each protrusion 18 is 0.05mm, and the height of each protrusion 18 is 0.05 mm; the transmittance of the bulge 18 is 65%, and the bulge 18 mainly prevents the contact of two smooth surfaces from generating Newton rings, reduces the thickness of the whole machine and can increase the utilization rate of light. The transmittance of the transparent liquid crystal screen 14 in this embodiment is greater than 3%, the distance between the transparent screen and the transparent light guide plate is less than 0.5mm, and the smaller the distance, the higher the luminance utilization rate. The distance between the transparent light guide plate 11 and the semi-transparent semi-reflective toughened glass on the back surface is also smaller than 0.5mm, the smaller the distance, the better the transmittance, and the thinner the thickness of the whole machine. The bottom of the transparent light guide plate 11 is attached with a reflecting layer to reflect the incident light of the three-edge light source and return the reflected light again to provide the light source, so that the light source is utilized more efficiently, and the brightness of the light source is higher.
Besides the complete machine metal outer frame is not transparent, the whole display area can display pictures and see actual objects and actual scenes behind the transparent display screen in a transparent way. The power line and the data transmission are firstly led out by penetrating through the soft rubber mat and the metal middle frame, the whole control main board is externally connected, and the subsequent transportation and assembly are convenient and attractive. The structure is simple, the manufacturing cost is low, the method is suitable, and the method can be used for the shopwindow display of the market, the fence display, the special cabinet display, the museum, the zoo and other places in batches subsequently.
The transparent liquid crystal display screen is characterized in that a signal and a power supply are transmitted to the transparent display through an external controller, the power supply drives the LED to be lighted to provide a light source, then the transparent light guide plate breaks the total reflection of the point light source through concave type dots with angles and converts the point light source into a surface light source to provide brightness to the transparent liquid crystal display screen, and the transparent liquid crystal display screen receives information transmitted by the surface and displays pictures on the screen. When the display picture is not needed, the LED power supply is turned off and the display signal is cut off, and if the signal source is not turned off, the display picture can be seen, and objects and actual scenes behind the display picture can be seen. The toughened glass mainly plays a safety protection role in practical application scenes, such as transparent display walls and transparent display fences, and the applications need safety consideration and protection.
Example 2
As shown in fig. 1-2, in the transparent LCD display device of the present embodiment, a display screen 1 and a frame 2 are disposed outside the display screen 1, where the display screen 1 includes a transparent light guide plate 11, a first tempered glass 12 disposed in parallel on a front side of the transparent light guide plate 11, and a second tempered glass 13 disposed in parallel on a rear side of the transparent light guide plate 11; the inner side of the first tempered glass 12 is provided with a transparent liquid crystal screen 14, gaps 15 are respectively arranged between the liquid crystal screen 14 and the transparent light guide plate 11 and between the second tempered glass 13 and the transparent light guide plate 11, the edge of the transparent light guide plate 11 is also provided with an LED light source 16, and the LED light source 16 can be arranged on the periphery of the light guide plate 11 and can also be arranged on a plurality of surfaces so as to provide light sources for the light guide plate 11. In order to improve the display effect of the display panel, in this embodiment, it is preferable that the LED light sources 16 are disposed on three surfaces of the top, the left side and the right side of the light guide plate 11, the reflective layer 4 is disposed on the bottom of the light guide plate 11, and the reflectivity of the reflective layer 4 is 90%.
The gap 15 can form an air layer having a refractive index smaller than that of the transparent light guide plate 11 to improve the light extraction efficiency of the light guide plate 11, and the gap between the air layers is 0.5mm to prevent the transparent light guide plate 11 from contacting the two light surfaces and to prevent newton's rings from being generated. The LEDs provide light sources, and the transparent light guide plate 11 provides the point light sources of the LEDs to the transparent liquid crystal panel as surface light sources. The mesh points and the surface of the transparent light guide plate 11 are smooth, so that light scattering is reduced, and the light can be accurately projected onto a transparent liquid crystal screen. The transparent light guide plate 11 is made of a transparent plastic plate made of polymethyl methacrylate and having a transmittance of 80%. The LED light source adopted by the embodiment adopts three-edge light incidence, and the three-edge light incidence is close to the light incidence end face of the transparent light guide plate 11, so that the maximum receiving brightness is achieved.
As shown in fig. 2, the frame 2 of this embodiment includes an upper casing 21 and a lower casing 22 disposed on the upper and lower end faces of the display screen 1, the upper casing 21 and the lower casing 22 are respectively provided with a clamping groove for installing the first tempered glass 12, the transparent light guide plate 11 and the second tempered glass 13, the heat conducting soft pad 3 is installed in the clamping groove, and the first tempered glass 12, the transparent light guide plate 11 and the second tempered glass 13 are fixed in the clamping groove through the heat conducting soft pad 3. The heat conducting soft cushion 3 can dissipate heat emitted by the LED light source, simultaneously seals the internal elements for oxidation and aging, and also separates hard collision between the glass and the metal middle frame, thereby preventing the glass from being damaged due to collision between the glass and the frame 2 and playing the role of shockproof sealing. The frame 2 is made of metal and is used for supporting the display screen to play a role in fixing and supporting.
The second toughened glass 13 of this embodiment adopts the semi-transparent semi-reflecting toughened glass between the thickness is 20mm, and this semi-transparent semi-reflecting toughened glass plays the guard action, has transparency and reflection action again, can reflect the light-emitting at the back again to the light guide plate 11 on to increase the luminance of display screen. A plurality of transparent bumps 17 are arranged on the inner side of the second toughened glass 13, the diameter of each bump 17 is 1mm, the height of each bump 17 is 1mm, and the transmittance of each bump 17 is more than 60%. The rear side of the transparent light guide plate 11 is provided with a plurality of transparent smooth concave mesh points 111, the diameter of the concave mesh points 111 is 0.3mm, the depth of the concave mesh points 111 is 0.1mm, the angle of the concave bottom is 170 degrees, and the distance between adjacent concave mesh points 111 is 6 mm. The non-dot surface of the transparent light guide plate 11 and the transparent liquid crystal panel 14 are close together to provide brightness to the transparent display panel, so that the picture displayed by the transparent LCD can be clearly seen. The transparent light guide plate 11 has a refractive index greater than that of an external medium, thereby improving light conductivity.
A plurality of transparent protrusions 18 are arranged on one side of the transparent liquid crystal screen 14 facing the transparent light guide plate 11, the diameter of each protrusion 18 is 1mm, and the height of each protrusion 18 is 1 mm; the transmittance of the bulge 18 is 70%, and the bulge 18 mainly prevents the contact of two smooth surfaces from generating Newton rings, reduces the thickness of the whole machine and can increase the utilization rate of light. The transmittance of the transparent liquid crystal panel 14 in this embodiment is 10%, the distance between the transparent panel and the transparent light guide plate is 0.5mm, and the smaller the distance, the higher the luminance utilization rate. The distance between the transparent light guide plate 11 and the semi-transparent semi-reflective toughened glass on the back surface is 0.4mm, the smaller the distance, the better the transmittance, and the thinner the thickness of the whole machine. The bottom of the transparent light guide plate 11 is attached with a reflecting layer, the reflectivity is 90%, incident light of the three-edge light source is reflected and returned again to provide a light source, the light source is utilized more efficiently, and the brightness of the light source is higher.
Besides the complete machine metal outer frame is not transparent, the whole display area can display pictures and see actual objects and actual scenes behind the transparent display screen in a transparent way. The power line and the data transmission are firstly led out by penetrating through the soft rubber mat and the metal middle frame, the whole control main board is externally connected, and the subsequent transportation and assembly are convenient and attractive. The structure is simple, the manufacturing cost is low, the method is suitable, and the method can be used for the shopwindow display of the market, the fence display, the special cabinet display, the museum, the zoo and other places in batches subsequently.
The transparent liquid crystal display screen is characterized in that a signal and a power supply are transmitted to the transparent display through an external controller, the power supply drives the LED to be lighted to provide a light source, then the transparent light guide plate breaks the total reflection of the point light source through concave type dots with angles and converts the point light source into a surface light source to provide brightness to the transparent liquid crystal display screen, and the transparent liquid crystal display screen receives information transmitted by the surface and displays pictures on the screen. When the display picture is not needed, the LED power supply is turned off and the display signal is cut off, and if the signal source is not turned off, the display picture can be seen, and objects and actual scenes behind the display picture can be seen. The toughened glass mainly plays a safety protection role in practical application scenes, such as transparent display walls and transparent display fences, and the applications need safety consideration and protection.
Example 3
As shown in fig. 1-2, in the transparent LCD display device of the present embodiment, a display screen 1 and a frame 2 are disposed outside the display screen 1, where the display screen 1 includes a transparent light guide plate 11, a first tempered glass 12 disposed in parallel on a front side of the transparent light guide plate 11, and a second tempered glass 13 disposed in parallel on a rear side of the transparent light guide plate 11; the inner side of the first tempered glass 12 is provided with a transparent liquid crystal screen 14, gaps 15 are respectively arranged between the liquid crystal screen 14 and the transparent light guide plate 11 and between the second tempered glass 13 and the transparent light guide plate 11, the edge of the transparent light guide plate 11 is also provided with an LED light source 16, and the LED light source 16 can be arranged on the periphery of the light guide plate 11 and can also be arranged on a plurality of surfaces so as to provide light sources for the light guide plate 11. In order to improve the display effect of the display panel, in this embodiment, it is preferable that the LED light sources 16 are disposed on three surfaces of the top, the left side and the right side of the light guide plate 11, the reflective layer 4 is disposed on the bottom of the light guide plate 11, and the reflectivity of the reflective layer 4 is 95%.
The gap 15 can form an air layer having a refractive index smaller than that of the transparent light guide plate 11 to improve the light extraction efficiency of the light guide plate 11, and the gap between the air layers is 0.2mm to prevent the transparent light guide plate 11 from contacting the two light surfaces and to prevent newton's rings from being generated. The LEDs provide light sources, and the transparent light guide plate 11 provides the point light sources of the LEDs to the transparent liquid crystal panel as surface light sources. The mesh points and the surface of the transparent light guide plate 11 are smooth, so that light scattering is reduced, and the light can be accurately projected onto a transparent liquid crystal screen. The transparent light guide plate 11 is made of a transparent plastic plate made of polycarbonate with a transmittance of 90%. The LED light source adopted by the embodiment adopts three-edge light incidence, and the three-edge light incidence is close to the light incidence end face of the transparent light guide plate 11, so that the maximum receiving brightness is achieved.
As shown in fig. 2, the frame 2 of this embodiment includes an upper casing 21 and a lower casing 22 disposed on the upper and lower end faces of the display screen 1, the upper casing 21 and the lower casing 22 are respectively provided with a clamping groove for installing the first tempered glass 12, the transparent light guide plate 11 and the second tempered glass 13, the heat conducting soft pad 3 is installed in the clamping groove, and the first tempered glass 12, the transparent light guide plate 11 and the second tempered glass 13 are fixed in the clamping groove through the heat conducting soft pad 3. The heat conducting soft cushion 3 can dissipate heat emitted by the LED light source, simultaneously seals the internal elements for oxidation and aging, and also separates hard collision between the glass and the metal middle frame, thereby preventing the glass from being damaged due to collision between the glass and the frame 2 and playing the role of shockproof sealing. The frame 2 is made of metal and is used for supporting the display screen to play a role in fixing and supporting.
The second toughened glass 13 of this embodiment adopts the semi-transparent semi-reflecting toughened glass between the thickness is 10mm, and this semi-transparent semi-reflecting toughened glass plays the guard action, has transparency and reflection action again, can reflect the light-emitting at the back again to light guide plate 11 on to increase the luminance of display screen. A plurality of transparent bumps 17 are arranged on the inner side of the second toughened glass 13, the diameter of each bump 17 is 0.5mm, the height of each bump 17 is 0.6mm, and the transmittance of each bump 17 is more than 60%. The rear side of the transparent light guide plate 11 is provided with a plurality of transparent smooth concave mesh points 111, the diameter of the concave mesh points 111 is 0.2mm, the depth of the concave mesh points 111 is 0.05mm, the angle of the concave bottom is 120 degrees, and the distance between adjacent concave mesh points 111 is 3 mm. The non-dot surface of the transparent light guide plate 11 and the transparent liquid crystal panel 14 are close together to provide brightness to the transparent display panel, so that the picture displayed by the transparent LCD can be clearly seen. The transparent light guide plate 11 has a refractive index greater than that of an external medium, thereby improving light conductivity.
A plurality of transparent protrusions 18 are arranged on one side of the transparent liquid crystal screen 14 facing the transparent light guide plate 11, the diameter of each protrusion 18 is 0.5mm, and the height of each protrusion 18 is 0.6 mm; the transmittance of the bulge 18 is 80%, and the bulge 18 mainly prevents the contact of two smooth surfaces from generating Newton rings, reduces the thickness of the whole machine and can increase the utilization rate of light. The transmittance of the transparent liquid crystal panel 14 in this embodiment is 50%, the distance between the transparent panel and the transparent light guide plate 11 is 0.05mm, and the smaller the distance, the higher the luminance utilization rate. The distance between the transparent light guide plate 11 and the semi-transparent semi-reflective toughened glass on the back is 0.3mm, the smaller the distance, the better the transmittance, and the thinner the thickness of the whole machine. The bottom of the transparent light guide plate 11 is attached with a reflecting layer, the reflectivity is 95%, incident light of the three-edge light source is reflected and returned again to provide a light source, the light source is utilized more efficiently, and the brightness of the light source is higher.
Besides the complete machine metal outer frame is not transparent, the whole display area can display pictures and see actual objects and actual scenes behind the transparent display screen in a transparent way. The power line and the data transmission line 5 are led out from the soft rubber cushion 4 and the metal middle frame 2 in a penetrating way, and the whole control main board is externally connected and is convenient and attractive in subsequent transportation and assembly. The structure is simple, the manufacturing cost is low, the method is suitable, and the method can be used for the shopwindow display of the market, the fence display, the special cabinet display, the museum, the zoo and other places in batches subsequently.
In the above embodiment, the external controller transmits a signal and a power source to the transparent display, the power source drives the LEDs to light up to provide a light source, then the transparent light guide plate converts the point light source into a surface light source by breaking total reflection of the angled concave dots to provide brightness to the transparent liquid crystal screen, and the transparent liquid crystal screen receives information transmitted by the surface and displays pictures on the screen. When the display picture is not needed, the LED power supply is turned off and the display signal is cut off, and if the signal source is not turned off, the display picture can be seen, and objects and actual scenes behind the display picture can be seen. The toughened glass mainly plays a safety protection role in practical application scenes, such as transparent display walls and transparent display fences, and the applications need safety consideration and protection.
The above-mentioned embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solution of the present invention by those skilled in the art should fall within the protection scope defined by the claims of the present invention without departing from the spirit of the present invention.
Claims (10)
1. The utility model provides a transparent LCD display device, includes display screen (1) and locates frame (2) in the display screen (1) outside, its characterized in that: the display screen (1) comprises a transparent light guide plate (11), first tempered glass (12) arranged on the front side of the transparent light guide plate (11) in parallel and second tempered glass (13) arranged on the rear side of the transparent light guide plate (11) in parallel; the inboard of first toughened glass (12) is equipped with transparent LCD screen (14), all be equipped with clearance (15) between LCD screen (14) and transparent light guide plate (11) and between second toughened glass (13) and transparent light guide plate (11), the edge of transparent light guide plate (11) still is equipped with LED light source (16).
2. The transparent LCD display device according to claim 1, wherein: the second toughened glass (13) is semi-transparent semi-reflective toughened glass, the thickness of the second toughened glass is 0.1-20mm, and the distance between the second toughened glass (13) and the transparent light guide plate (11) is less than 0.05 mm.
3. The transparent LCD display device according to claim 1 or 2, characterized in that: the inner side of the second toughened glass (13) is provided with a plurality of transparent salient points (17), the diameter of each salient point (17) is 0.05-1mm, and the height of each salient point is 0.05-1 mm.
4. The transparent LCD display device according to claim 1, wherein: the rear side of the transparent light guide plate (11) is provided with a plurality of transparent smooth concave mesh points (111), the diameter of each concave mesh point (111) is 0.01-0.3mm, the depth of each concave mesh point is 0.01-0.1mm, the angle of the concave bottom of each concave mesh point is 60-170 degrees, and the distance between every two adjacent concave mesh points (111) is 0.1-6 mm.
5. The transparent LCD display device according to claim 1, wherein: one side of the transparent liquid crystal screen (14) facing the transparent light guide plate (11) is provided with a plurality of transparent protrusions (18), the diameter of each protrusion (18) is 0.05-1mm, and the height of each protrusion is 0.05-1 mm.
6. The transparent LCD display device according to claim 3, wherein: the transmission rate of the salient points (17) is more than 60 percent.
7. The transparent LCD display device according to claim 5, wherein: the transmittance of the projections (18) is greater than 60%.
8. The transparent LCD display device according to claim 1, wherein: frame (2) are including setting up last casing (21) and lower casing (22) at both ends face about display screen (1), upward be equipped with the draw-in groove that is used for installing first toughened glass (12), transparent light guide plate (11) and second toughened glass (13) on casing (21) and lower casing (22) respectively, first toughened glass (12), transparent light guide plate (11) and second toughened glass (13) with be equipped with heat conduction cushion (3) between the draw-in groove.
9. The transparent LCD display device according to claim 1, wherein: the LED light sources (16) are respectively arranged at the top, the left side and the right side of the transparent light guide plate (11), the bottom of the transparent light guide plate (11) is provided with a reflecting layer (4), and the reflectivity of the reflecting layer (4) is larger than 80%.
10. The transparent LCD display device according to claim 1, wherein: the distance between the transparent liquid crystal screen (14) and the transparent light guide plate (11) is less than 0.5 mm.
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| CN201911109883.9A CN111061076A (en) | 2019-11-12 | 2019-11-12 | Transparent LCD display device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911109883.9A CN111061076A (en) | 2019-11-12 | 2019-11-12 | Transparent LCD display device |
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| CN105467675A (en) * | 2015-12-24 | 2016-04-06 | 上海九山电子科技有限公司 | Liquid-crystal refrigerator door structure and producing method thereof |
| CN107762380A (en) * | 2017-11-06 | 2018-03-06 | 福耀玻璃工业集团股份有限公司 | A kind of double glazing with Transparence Display function |
| CN109887427A (en) * | 2019-02-01 | 2019-06-14 | 佛山星乔电子科技有限公司 | A kind of installation system of subway transparent display screen |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105467675A (en) * | 2015-12-24 | 2016-04-06 | 上海九山电子科技有限公司 | Liquid-crystal refrigerator door structure and producing method thereof |
| CN107762380A (en) * | 2017-11-06 | 2018-03-06 | 福耀玻璃工业集团股份有限公司 | A kind of double glazing with Transparence Display function |
| CN109887427A (en) * | 2019-02-01 | 2019-06-14 | 佛山星乔电子科技有限公司 | A kind of installation system of subway transparent display screen |
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Application publication date: 20200424 |
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