WO2019042030A1

WO2019042030A1 - Light-control panel and led display screen

Info

Publication number: WO2019042030A1
Application number: PCT/CN2018/095886
Authority: WO
Inventors: 刘宇; 吴振志; 沈毅; 李选中; 吴涵渠
Original assignee: 深圳市奥拓电子股份有限公司
Priority date: 2017-08-30
Filing date: 2018-07-17
Publication date: 2019-03-07
Also published as: CN109427264A

Abstract

Disclosed are a light-control panel (100) and an LED display screen (200). The light-control panel (100) comprises a dielectric substrate (10) and an image sensing layer (30) arranged on the dielectric substrate (10), wherein one side of the dielectric substrate (10) is provided with a light-control sensing circuit (50), and one side, facing away from the light-control sensing circuit (50), of the dielectric substrate (10) is provided with a plurality of pixel lamps (40) arranged at intervals; the image sensing layer (30) is arranged in a gap formed by the plurality of pixel lamps (40); and the image sensing layer (30) is used for sensing an image signal and transmitting the image signal to the light-control sensing circuit (50) so as to control the pixel lamps (40). By means of the structure, the size of the light-control panel (100) is not limited while a light-control display function is achieved, and the structure can be applied to a large-size LED display screen (200).

Description

Light control board and LED display

Technical field

The embodiment of the invention belongs to the technical field of light control display, and particularly relates to a light control board and an LED display screen.

Background technique

With the continuous development of LED display technology, capacitive touch technology is also widely used in the LED display of various electronic products, realizing the intelligent light control function of electronic products, greatly improving the ease of use of electronic products.

However, the prior art capacitive touch technology requires the use of plexiglass as the touch layer. When the size of the plexiglass exceeds a certain range, various physical problems such as breakage and poor real effects are easily generated. Therefore, the prior art capacitive touch technology can only be applied to a small-sized display screen, and a large-sized display screen is usually required for a conference display, a television station display, an exhibition display, etc., and the existing capacitive touch technology cannot meet the increasing demand. The large size of growth shows demand. Providing a technical solution that can be applied to a large-sized display has become an urgent problem to be solved.

technical problem

The embodiment of the invention provides a light control board and an LED display screen, so as to solve the prior art, the capacitive touch technology can only be applied to a small-sized display screen, and cannot meet the needs of the increasingly large-sized display screen. The problem.

Technical solution

In order to solve the above technical problem, one technical solution provided by the present invention is:

An optical control board comprising a dielectric substrate and an image sensing layer disposed on the dielectric substrate; wherein one side of the dielectric substrate is provided with a light control sensing circuit, and the dielectric substrate is facing away from the light control sensing One side of the circuit is provided with a plurality of pixel lamps arranged at intervals, and the image sensing layer is disposed in a gap formed by the plurality of pixel lamps, wherein the image sensing layer is configured to sense an image signal and transmit the image signal to The light control sensing circuit controls the pixel lamp.

In order to solve the above technical problem, another technical solution provided by the present invention is:

An LED display screen comprising the above described light control panel.

Beneficial effect

In the invention, the light control board is formed by sequentially stacking the pixel lamp spacer layer and the image sensing layer on the dielectric substrate, and the image signal is sensed by the image sensing unit on the image sensing layer, and the image signal is transmitted to the light control sensing circuit for processing. It can realize the light control display function without using plexiglass to make the display screen, so the size of the light control board can be unrestricted, and the production of large-size light control display can be realized and produced. Low cost, simple processing and so on.

DRAWINGS

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below. It is obvious that the drawings in the following description are some embodiments of the present invention, Those skilled in the art can also obtain other drawings based on these drawings without paying any creative work.

1 is a plan view of an embodiment of a light control panel of the present invention;

Figure 2 is a cross-sectional view in the vertical direction of an embodiment of the light control panel of the present invention;

3 is a schematic diagram showing the relationship between the light control sensing circuit of the present invention and the image sensing unit and the LED pixel lamp;

4 is a partial structural schematic view of the LED display screen of the present utility.

Embodiments of the invention

In the following, the technical solutions in the embodiments of the present invention will be clearly described in conjunction with the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are the present invention. Some embodiments, not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts shall fall within the scope of the present invention.

The term "comprising" and variations of the invention in the specification and claims of the invention and the above description are intended to cover a non-exclusive inclusion. For example, a process, method or system, product or device comprising a series of steps or units is not limited to the steps or units listed, but optionally also includes steps or units not listed, or alternatively also includes Other steps or units inherent to these processes, methods, products or equipment. Moreover, the terms "first," "second," and "third," etc. are used to distinguish different objects and are not intended to describe a particular order.

实施例一：Embodiment 1:

Referring to FIG. 1 to FIG. 3, as shown in FIG. 1, a light control panel 100 of the embodiment includes:

The dielectric substrate 10 is provided with a light control sensing circuit 50 for receiving an image signal transmitted by the image sensing layer 30, and controlling the pixel light (not shown) according to the image signal.

At least one layer of the pixel lamp spacer 20 is disposed on a side of the dielectric substrate 10 facing away from the light control sensing circuit 50. The pixel lamp spacer layer 20 is provided with a plurality of spaced-apart pixel lamps The through-holes 21 are provided, and the pixel lamp spacer layer 20 is an integral structure, and a hole gap 22 is formed between the adjacent through-holes 21.

At least one image sensing layer 30 is disposed on a side of the pixel lamp spacer 20 facing away from the dielectric substrate 10. The image sensing layer 30 includes at least one image sensing unit 31, and one of the image sensing units 31. The image sensing unit 31 is configured to sense an image signal and transmit the image signal to the light control sensing circuit 50. The light control sensing circuit 50 is configured according to the image signal. To control the pixel light. Optionally, if there are multiple image sensing units 31, the plurality of image sensing units 31 are evenly distributed in the plurality of aperture gaps 22.

In the embodiment, one of the through holes 21 is disposed with a plurality of the pixel lamps, and the plurality of the pixel lamps are spaced apart from each other. The dielectric substrate 10 is provided with a plurality of via holes (not shown). The image sensing unit 31 is connected to the light control sensing circuit 50 through a via through a wire.

In this embodiment, the number of the image sensing units 31 is less than the number of the hole gaps 22, and the remaining holes are apart from the hole gap 22 provided with the image sensing unit 31. A trace is provided in the gap 22 for connecting the image sensing unit 31 and the light control sensing circuit 50.

In this embodiment, each of the image sensing units 31 is provided with an image sensor (not shown) for sensing images, and the image change signal of the display screen surface is transmitted to the light control sensor through the image sensor. Circuit 50 performs the processing.

In this embodiment, the pixel lamp is optional as the LED pixel lamp 40, because the LED or the like has the advantages of long service life, low energy consumption, and environmental protection.

As shown in FIG. 3, in the embodiment, each of the image sensing units 31 is selectable adjacent to at least one of the pixel lamps. In a specific application, one image sensing unit 31 may correspond to one LED pixel lamp 40 or two or more LED pixel lamps 40, specifically determined by the density of the LED pixel lamps 40.

In this embodiment, the light control sensing circuit 50 includes at least one light control sensing module 51, and each of the light control sensing modules 51 is connected to at least one of the image sensing units 31, and the light control sensing module 51 is configured to receive the image signal input by the image sensing unit 31, and process the image signal.

In this embodiment, the light control sensing circuit 50 includes a light sensing module 51 corresponding to the number of all the image sensing units 31, and each of the light sensing modules 51 is connected to an image sensing unit 31.

In a specific application, there may be only one light control sensing module 51. When there is only one light control sensing module 51, the light control sensing module 51 is respectively connected to the plurality of image sensing units 31.

In this embodiment, the optional light control sensing circuit 50 further includes an LED indicator.

In this embodiment, the pixel lamp spacer layer 20 and the dielectric substrate 10 are both made of an insulating material. Optionally, the insulating material may be selected from any type of material according to actual needs, for example, a fiberglass board, a liquid crystal polymer film, a resin or a ceramic example.

In this embodiment, the cross section of the image sensing unit 31 parallel to the dielectric substrate 10 is octagonal, and the cross section of the through hole 21 parallel to the dielectric substrate 10 is circular. The octagon includes four curved sides and four straight sides, and the curved edges and the straight sides are alternately distributed. The adjacent sides of the adjacent image sensing units 31 are straight sides parallel to each other, and the curved edges of the image sensing unit 31 and the same The arcs of the circular arcs of the adjacent through holes 21 are matched. It is to be noted that the cross section of the image sensing unit 31 and the through hole 21 of the present invention parallel to the dielectric substrate 10 is not limited to the above shape, such as the parallel of the image sensing unit 31 and the through hole 21. The cross section of the dielectric substrate 10 may be rectangular or other shapes.

For convenience of illustration, only one layer of image sensing layer 30, one layer of pixel lamp spacers 20, and one layer of dielectric substrate 10 are shown by way of example for convenience of illustration. In a specific application, the number of layers of the image sensing layer 30, the pixel lamp spacer layer 20 or the dielectric substrate 10 can be set according to actual needs. For example, two layers of the pixel lamp spacer layer 20 and the two layers of the dielectric substrate 10 can be disposed, and the number of layers is increased. The purpose is to increase the thickness and facilitate the routing. If the layer spacing is too small, the thickness of each layer is too thin, which is not conducive to routing.

As shown in the top view of FIG. 1, the image sensing layer 30 includes a plurality of image sensing units 31 arranged at intervals. In FIG. 1, the spacing of any adjacent image sensing units 31 is equal, and the image sensing unit 31 is adjacent thereto. The spacing between the holes 21 is also equal. Thus, the structure distribution shown in FIG. 1 can maximize the area of the image sensing layer 30, so that when the light control panel 100 based on the structure is applied to the LED display panel 200, a good light control effect can be achieved.

In a specific application, the cross-sectional shape of the image sensing unit 31 and the through hole 21 may be set according to actual needs as long as the function of sensing the image signal and placing the LED pixel lamp 40 can be easily realized.

In the embodiment, a plurality of via holes are formed in the dielectric substrate 10. The image sensing unit 31 and the LED pixel lamp 40 are connected to the bottom of the dielectric substrate 10 through wires passing through the via holes, and then connected to the bottom of the dielectric substrate 10. The light control sensing circuit 50, wherein the pixel lamp spacer layer 20 and the dielectric substrate 10 are both made of an insulating material.

In a specific application, the thickness of the dielectric substrate 10 and the number of via holes can be set according to actual needs, as long as the traces of the image sensing unit 31 and the LED pixel lamp 40 are facilitated.

The working principle of the invention is as follows:

The non-contact image sensor does not need to be in contact with the measured medium, but is transmitted to the image sensor through thermal radiation or convection of the measured medium to achieve the purpose of acquiring an image. The main feature of this method of acquiring an image is that it can measure an image of a moving state substance (such as an image when a person approaches the display screen) and an object with a small lightness (such as an image distribution in an integrated circuit). The invention provides an image sensing unit 31 on the surface of the light control panel 100, and connects the image sensing unit 31 to the light control sensing circuit 50 by wires. When the image on the surface of the display screen changes, an image occurs when a person or an object approaches the display screen. When the image sensing unit 31 senses the change of the image on the surface of the display screen, the image signal is transmitted to the light control sensing circuit 50, and then the light control sensing circuit 50 controls the LED by receiving the image signal transmitted by the image sensing unit 31. Pixel light 40. For the above principle, reference may be made to the relationship between the photo-sensing circuit 50 and the image sensing unit 31 and the LED pixel lamp 40 shown in FIG.

The present invention constructs the light control panel 100 by sequentially stacking the pixel lamp spacer layer 20 and the image sensing layer 30 on the dielectric substrate 10, and the image sensing unit 31 on the image sensing layer 30 senses the image signal and transmits the image signal to The light control sensing circuit 50 performs processing, and the size of the light control panel 100 can be unrestricted while realizing the light control display function, which can realize the production of a large-size light control display screen, and has low production cost and processing. The process is simple and so on.

实施例二：Embodiment 2:

As shown in FIG. 4, the present embodiment provides an LED display panel 200, which includes the optical control panel 100 of the first embodiment. Since the optical control panel 100 has been detailed in the first embodiment, Note, the description will not be repeated here.

An LED display screen 200 of the present invention is configured by sequentially stacking a pixel lamp spacer layer 20 and an image sensing layer 30 on a dielectric substrate 10 to form an optical control panel 100, and sensing an image through the image sensing unit 31 on the image sensing layer 30. The signal is transmitted to the light control sensing circuit 50 for processing, and the light control display function can be realized without using the plexiglass to make the display screen, so that the size of the light control panel 100 can be unrestricted. It can realize the production of large-size light-controlled display screen, and has the advantages of low production cost and simple processing technology.

The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection of the present invention. Within the scope.

Claims

A light control panel, comprising: a dielectric substrate and an image sensing layer disposed on the dielectric substrate;

One side of the dielectric substrate is provided with a light control sensing circuit, and a side of the dielectric substrate facing away from the light control sensing circuit is provided with a plurality of pixel lamps arranged at intervals, and the image sensing layer is disposed on the plurality of In the gap formed by the pixel lamps, the image sensing layer is used to sense an image signal, and the image signal is transmitted to the light control sensing circuit to control the pixel lamp.
The optical control board according to claim 1, further comprising at least one pixel lamp spacing layer for spacing a plurality of said pixel lamps, said pixel lamp spacing layer being disposed on said dielectric substrate and said Between the image sensing layers, a plurality of through holes for arranging the pixel lamps are arranged on the pixel lamp spacer layer, and the pixel lamp spacer layer is an integral structure, and adjacent ones of the through holes are formed. Hole clearance

The image sensing layer is provided with at least one layer, and includes at least one image sensing unit, wherein the image sensing unit is correspondingly disposed in one of the hole gaps, and the image sensing unit is configured to sense an image signal, and the An image signal is passed to the light control sensing circuit to control the pixel light.
The light control board according to claim 2, wherein one of the through holes is provided with one of the pixel lamps to space a plurality of the pixel lamps, and a plurality of via holes are formed in the dielectric substrate. The image sensing unit is connected to the light control sensing circuit through a via through a wire.
The light control panel according to claim 2, wherein the number of the image sensing units is less than the number of the aperture gaps, except for the aperture gap provided with the image sensing unit, and remaining A trace is disposed in the hole gap, and the trace is used to connect the image sensing unit and the light control sensing circuit.
The light control panel according to claim 1, wherein each of the image sensing units is provided with an image sensor for sensing an image.
The light control panel according to claim 1, wherein the pixel lamp is an LED pixel lamp.
The light control panel according to claim 1, wherein each of said image sensing units is adjacent to at least one of said pixel lamps.
The optical control board of claim 1 , wherein the light control sensing circuit comprises at least one light control sensing module, each of the light control sensing modules correspondingly connecting at least one of the image sensing units, the light The control sensing module is configured to receive the image signal input by the image sensing unit, and process the image signal.
The light control panel according to claim 1, wherein a cross section of the image sensing unit parallel to the dielectric substrate is octagonal, and a cross section of the through hole parallel to the dielectric substrate is circular The octagon includes four curved sides and four straight sides, and the curved edges and the straight sides are alternately distributed, and adjacent sides of the adjacent image sensing units are straight sides parallel to each other, and the curved edges of the image sensing unit are The arc of the cross-section arc of the through hole adjacent thereto is matched.
An LED display panel comprising the light control panel according to any one of claims 1 to 9.