CN110888543A - touch display device - Google Patents

Abstract

A touch display device comprises a display module, a frame body, a light-transmitting substrate, an auxiliary colloid and a touch module. The display modules can be powered to operate independently. The frame body is provided with a ring coating part and an upper coating part, the ring coating part coats the periphery of the display module, the upper coating part coats part of the display surface of the display module, and the upper coating part and the display surface form a containing groove together. The transparent substrate is arranged on the display surface through the first optical adhesive in a bonding mode, part of the transparent substrate protrudes out of the upper coating portion, and the upper coating portion is provided with the auxiliary adhesive. The touch module is connected with one side of the light-transmitting substrate through the second optical cement, and the touch module is connected with the frame body through the auxiliary cement. According to the touch display device, the transparent base material is arranged, so that the use amount of the optical adhesive with high cost can be greatly reduced, and the manufacturing cost of the whole touch display device can be greatly reduced.

Description

touch display device

technical field

The present invention relates to a touch display device, in particular to an industrial touch display device.

Background technique

In order to meet the requirements of the industrial environment, the overall production cost of the existing industrial touch display devices is much higher than that of the touch display devices of the general consumer industry. Therefore, for related manufacturers, how to effectively reduce the manufacturing cost of the overall industrial touch display device is a problem that needs to be solved.

SUMMARY OF THE INVENTION

The main purpose of the present invention is to provide a touch display device and a display device to improve the problem of high manufacturing cost of the touch display device in the prior art.

In order to achieve the above object, the present invention provides a touch display device, which includes: a display module, which can be powered to operate independently, the display module has a display surface, and the display module is opposite to the display surface One side is defined as a bottom surface; wherein, when the display module is powered and operated, the display surface can present a display screen; a frame body is fixedly arranged on the periphery of the display module, and the frame body includes There is a ring covering part and an upper covering part, the ring covering part is wrapped around the periphery of the display module, the upper covering part is connected with the ring covering part, and the upper covering part is The upper cladding part and the display surface together form an accommodating groove; a light-transmitting base material is attached to the display surface through a first optical adhesive. On the display surface, the light-transmitting base material is correspondingly located in the accommodating groove, and the part of the light-transmitting base material far from the display surface is higher than a top surface of the upper cladding portion, The top surface is located on the side of the upper cladding portion away from the display surface; the height of the light-transmitting substrate in the normal direction of the display surface above the top surface is defined as a predetermined height ; wherein, the light-transmitting base material is not formed by curing optical glue; at least one auxiliary colloid is arranged on the top surface, and the thickness of the auxiliary colloid in the normal direction of the display surface is greater than or equal to the predetermined height; a touch module, which is attached and arranged on the side of the transparent substrate away from the display module through a second optical adhesive, and the touch module is attached and arranged on the transparent substrate through the auxiliary glue the top surface; the upper cladding part, the light-transmitting substrate and the display module are located in the range of the orthographic projection of the touch module facing the light-transmitting substrate; The percentage difference between the refractive index and the refractive index of the light-transmitting substrate is between 0.1 percent and 5 percent.

Preferably, the sum of the thickness of the transparent substrate in the normal direction of the display surface and the thickness of the first optical glue in the normal direction of the display surface is less than or equal to the thickness of the auxiliary glue in the normal direction of the display surface. The sum of the thickness in the normal direction of the display surface and the depth of the accommodating groove in the normal direction of the display surface; wherein, the thickness of the light-transmitting substrate in the normal direction of the display surface is greater than or equal to 0.1 mm, the thickness of the auxiliary colloid in the normal direction of the display surface is between 0.05 mm and 1.0 mm, and the depth of the accommodating groove in the normal direction of the display surface is greater than or equal to 0.1 mm.

Preferably, the sum of the thickness of the transparent substrate in the normal direction of the display surface and the thickness of the second optical adhesive in the normal direction of the display surface is less than or equal to the accommodating groove in the The sum of the depth in the normal direction of the display surface and the thickness of the auxiliary colloid in the normal direction of the display surface; wherein, the thickness of the light-transmitting substrate in the normal direction of the display surface is greater than or equal to 0.1 mm, the thickness of the auxiliary colloid in the normal direction of the display surface is between 0.05 mm and 1.0 mm, and the depth of the accommodating groove in the normal direction of the display surface is greater than or equal to 0.1 mm.

Preferably, a predetermined gap is formed between the outer edge of the light-transmitting base material and the inner edge of the upper cladding part, and the outer edge of the light-transmitting base material and the inner edge of the upper cladding part are separated from each other. The distance between them is less than or equal to 0.3 mm.

Preferably, the touch display device includes a plurality of the light-transmitting substrates, the plurality of the light-transmitting substrates are connected to each other through a third optical glue, and the plurality of the light-transmitting substrates that are connected to each other are connected to each other. The material is arranged in the accommodating groove, and at least a part of the light-transmitting base material is higher than the top surface.

Preferably, the frame body further includes a bottom cladding portion and an electrical connection module, the bottom cladding portion is connected to the ring cladding portion, and the bottom cladding portion covers the bottom of the display module , the electrical connection module includes at least one electrical connector, and the display module can be electrically connected with an external control device through the electrical connector to receive power and image signals provided by the external control device; the transparent A functional piece is arranged between the light base material and the display surface or between the light transmissive base material and the touch module, and the functional piece is one of an anti-electromagnetic interference sheet, a polarizer and a privacy sheet .

In order to achieve the above object, the present invention also provides a touch display device, which includes: a display module, which can be powered to operate independently, the display module has a display surface, and the display module is opposite to the display One side of the surface is defined as a bottom surface; wherein, when the display module is powered and operated, the display surface can present a display screen; a frame body is fixedly arranged on the periphery of the display module, and the frame body includes a a ring wrapping part and an upper wrapping part, the ring wrapping part wraps around the periphery of the display module, the upper wrapping part is connected with the ring wrapping part, the upper wrapping part Correspondingly located on one side of the display surface of the display module, and the upper cladding part and the display surface together form an accommodating groove; a light-transmitting base material, which is attached to the display surface through a first optical adhesive the display surface, the light-transmitting base material is correspondingly located in the accommodating groove, and the part of the light-transmitting base material away from the display surface is higher than the upper cladding part away from the display surface a top surface; the height of the transparent substrate in the normal direction of the display surface above the top surface is defined as a predetermined height; a first indium tin oxide layer formed on the transparent substrate The side of the substrate facing the display surface or the side away from the display surface; at least one second optical glue, which is arranged on the top surface, and the second optical glue is in the normal direction of the display surface. The thickness is greater than or equal to the predetermined height; a touch module is attached and disposed on the side of the transparent substrate away from the display module through a second optical adhesive, and the touch module passes through the first Two optical adhesives are attached and arranged on the top surface; the upper cladding portion, the light-transmitting substrate and the display module are correspondingly located on the orthographic projection of the touch module facing the light-transmitting substrate. The touch module includes a second indium tin oxide layer, and the first indium tin oxide layer and the second indium tin oxide layer can cooperate with each other, so that when the touch module is touched, the The X-axis position signal and the Y-axis position signal are correspondingly generated; the percentage difference between the refractive index of the touch module and the refractive index of the transparent substrate is between 0.1% and 5%.

Preferably, the sum of the thickness of the transparent substrate in the normal direction of the display surface and the thickness of the first optical glue in the normal direction of the display surface is less than or equal to the thickness of the auxiliary glue in the normal direction of the display surface. The sum of the thickness in the normal direction of the display surface and the depth of the accommodating groove in the normal direction of the display surface; wherein, the thickness of the light-transmitting substrate in the normal direction of the display surface is greater than or equal to 0.1 mm, the thickness of the auxiliary colloid in the normal direction of the display surface is between 0.05 mm and 1.0 mm, and the depth of the accommodating groove in the normal direction of the display surface is greater than or equal to 0.1 mm.

Preferably, the sum of the thickness of the transparent substrate in the normal direction of the display surface and the thickness of the second optical adhesive in the normal direction of the display surface is less than or equal to the accommodating groove in the The sum of the depth in the normal direction of the display surface and the thickness of the auxiliary colloid in the normal direction of the display surface; wherein, the thickness of the light-transmitting substrate in the normal direction of the display surface is greater than or equal to 0.1 mm, the thickness of the auxiliary colloid in the normal direction of the display surface is between 0.05 mm and 1.0 mm, and the depth of the accommodating groove in the normal direction of the display surface is greater than or equal to 0.1 mm.

Preferably, a predetermined gap is formed between the outer edge of the light-transmitting base material and the inner edge of the upper cladding part, and the outer edge of the light-transmitting base material and the inner edge of the upper cladding part are separated from each other. The distance between them is less than or equal to 0.3 mm.

Preferably, the touch display device includes a plurality of the light-transmitting substrates, the plurality of the light-transmitting substrates are connected to each other through a third optical glue, and the plurality of the light-transmitting substrates that are connected to each other are connected to each other. The material is arranged in the accommodating groove, and at least a part of the light-transmitting base material is higher than the top surface.

Preferably, the frame body further includes a bottom cladding portion and an electrical connection module, the bottom cladding portion is connected to the ring cladding portion, and the bottom cladding portion covers the bottom of the display module , the electrical connection module includes at least one electrical connector, and the display module can be electrically connected with an external control device through the electrical connector to receive power and image signals provided by the external control device; the transparent A functional piece is arranged between the light base material and the display surface or between the light transmissive base material and the touch module, and the functional piece is one of an anti-electromagnetic interference sheet, a polarizer and a privacy sheet .

The beneficial effects of the present invention may be that: the touch display device of the present invention, through the arrangement of the light-transmitting substrate, can greatly reduce the use amount of expensive optical glue, thereby greatly reducing the manufacturing cost of the overall touch display device.

Description of drawings

FIG. 1 is a schematic diagram of a touch display device of the present invention.

FIG. 2 is a schematic diagram of another angle of the touch display device of the present invention.

3 is a schematic cross-sectional view of the first embodiment of the touch display device of the present invention taken along the section line III shown in FIG. 1 .

FIG. 4 is an exploded schematic view of the touch display device of the present invention.

5 is a schematic cross-sectional view of a second embodiment of the touch display device of the present invention.

6 is a schematic cross-sectional view of a third embodiment of the touch display device of the present invention.

7 is another schematic cross-sectional view of a third embodiment of the touch display device of the present invention.

FIG. 8 is a schematic cross-sectional view of a fourth embodiment of the touch display device of the present invention.

9 is a schematic cross-sectional view of a fifth embodiment of the touch display device of the present invention.

FIG. 10 is a schematic cross-sectional view of a sixth embodiment of the touch display device of the present invention.

11 is a schematic cross-sectional view of a seventh embodiment of the touch display device of the present invention.

Detailed ways

In the following description, if it is indicated to refer to a specific figure or as shown in a specific figure, it is only used for emphasis in the subsequent description, and most of the related content mentioned appears in the specific figure, However, it is not limited that only the specific drawings may be referred to in this subsequent description.

Please refer to FIG. 1 to FIG. 4 together. FIG. 1 is a schematic diagram of a touch display device of the present invention; FIG. 2 is a schematic diagram of another angle of the touch display device of the present invention; FIG. 3 is a touch control display device of the present invention. The first embodiment of the display device is a schematic cross-sectional view taken along section line III shown in FIG. 1 ; FIG. 4 is an exploded schematic view of the touch display device of the present invention. The touch display device A includes a display module 10 , a frame body 20 , an electrical connection module 30 , a light-transmitting substrate 40 , a first optical glue 50 , an auxiliary glue 60 , a touch module 70 and at least one second Optical glue 80.

The display module 10 can be powered and operated independently. The display module 10 has a display surface 101 , and the side of the display module 10 opposite to the display surface 101 is defined as a bottom surface 102 . Wherein, when the display module 10 is powered on and operates, the display surface 101 can present a display image. In a specific application, the display module 10 can be manufactured and sold independently, or the display module 10 can also be simply assembled and sold. In practical applications, the display module 10 can be a rectangular cube or a square cube, which is not limited thereto, and the size of the display module 10 can also be changed according to requirements.

The frame body 20 is fixedly disposed on the periphery of the display module 10 . The frame body 20 includes a ring covering part 201 and an upper covering part 202 . The ring covering part 201 surrounds the periphery of the display module 10 , and the upper covering part 202 Connected to the ring covering portion 201 , the upper covering portion 202 is correspondingly located on the side of the display module 10 having the display surface 101 , and the upper covering portion 202 and the display surface 101 together form an accommodating slot SP (as shown in FIG. 4 ). ).

The display module 10 can be covered by the frame body 20 to have a better protection effect, especially in an industrial environment; in other words, the touch display device A of the present invention, because the display module 10 is covered with a frame outside Therefore, the display module 10 will not be easily damaged by the external environment, so that the service life of the touch display device A can be greatly improved. In practical applications, the material of the frame body 20 may be metal, plastic, etc. as required, which is not limited herein.

As shown in FIG. 2 , the electrical connection module 30 may include an electrical connector 31 and a circuit board 32 . The electrical connector 31 is disposed on the circuit board 32 , and the circuit board 32 may also be provided with other components for auxiliary display. The electronic parts that the module 10 operates. The display module 10 can be electrically connected with an external control device (such as an industrial computer, etc.) through the electrical connector 31 to receive the power and image signals provided by the external control device; in other words, the external control device can be connected through the relevant electrical connection The wire is electrically connected to the electrical connector 31 to control the operation of the display module 10 accordingly. In the figure of this embodiment, the electrical connection module 30 includes a single electrical connector 31 as an example, but the number of electrical connectors 31 is not limited to this, and can be increased according to requirements; in addition, about electrical connectors The installation position of the 31 can also be changed according to requirements, and is not limited to being arranged on one side of the bottom cladding portion 203 (described in detail later). In the embodiment in which the frame body 20 does not include the bottom covering portion 203 , the frame body 20 and the display module 10 may be fixed to each other in a tight fit, and the frame body 20 and the display module 10 may also be fitted with fixing members such as adhesive tapes. Strengthen the connection strength between each other.

It is particularly noted that, in practical applications, the display module 10 and the frame body 20 can be manufactured and sold in groups, and the relevant manufacturers can directly assemble the frame body 20 and the display module 10 and apply them to the required requirements. In the product, or the display module 10 covered with the frame body 20 may be directly sold.

As shown in FIG. 3 and FIG. 4 , the transparent substrate 40 is attached to the display surface 101 through a first optical adhesive 50 , the transparent substrate 40 is correspondingly located in the accommodating groove SP, and the transparent substrate 40 The portion away from the display surface 101 is higher than a top surface 2021 of the upper cladding portion 202 away from the display surface 101 . The light-transmitting substrate 40 can be any structure that can transmit light. Of course, the light-transmitting substrate 40 must allow relevant personnel to view the display module 10 from the side of the light-transmitting substrate 40 opposite to the display surface 101 . The display image displayed on the display surface 101; for example, the light-transmitting substrate 40 may be glass, optical plastic (eg, PMMA), or a combination of glass and optical plastic, which is not limited herein. The first optical adhesive 50 is, for example, a solid transparent optical adhesive OCA (optically clear Adhesive) or a liquid transparent optical adhesive OCR (Optically Clear Resin), which is not limited herein. It is particularly noted that the light-transmitting substrate 40 mentioned herein is not a cured optical adhesive. On the contrary, the present invention uses the light-transmitting substrate 40 to replace the optical adhesive, so as to reduce the usage amount of the high-cost optical adhesive. This reduces the overall manufacturing cost of the touch display device A.

An auxiliary colloid 60 is provided on the top surface 2021 of the frame body 20 . In a specific implementation, the auxiliary colloid 60 may be a solid glue containing two release papers. In practical applications, the auxiliary colloid 60 basically covers the entire top surface 2021 .

The touch module 70 is attached to the side of the transparent substrate 40 opposite to the side connected to the display surface 101 through a second optical glue 80 , and the touch module 70 is also connected to the frame 20 through the auxiliary glue 60 . In other words, the touch module 70 is fixed to the transparent substrate 40 and the frame body 20 by the second optical glue 80 and the auxiliary glue 60 . The upper cladding portion 202 , the light-transmitting substrate 40 and the display module 10 are located in the range of the orthographic projection of the touch module 70 facing the light-transmitting substrate 40 , that is, the touch module 70 is integrally covered. On one side of the frame body 20 and the display module 10 , the light-transmitting substrate 40 and the display surface 101 are both shielded by the touch module 70 .

In particular, the refractive index of the light-transmitting substrate 40 is approximately the same as the refractive index of the touch panel of the touch module 70 . In this way, the relevant personnel can view the light-transmitting substrate 40 from the side of the touch module 70 . When the display screen is displayed on the display surface 101, there will be no afterimage or other related image presentation problems. In practical applications, the percentage difference between the refractive index of the touch module 70 and the refractive index of the transparent substrate may be between 0.1% and 5%.

As shown in FIG. 4 , in the actual manufacturing process, relevant manufacturers may first use the second optical adhesive 80 to fix the light-transmitting substrate 40 on one side of the touch module 70 ; The auxiliary glue 60 is arranged on the surface 2021; finally, the first optical glue 50 is coated or attached to the side of the light-transmitting substrate 40 opposite to the touch module 70, and related mechanical equipment (such as various vacuum lamination equipment) is used. , the light-transmitting substrate 40 is attached and disposed on the display surface 101 through the first optical adhesive 50 . In special applications, the first optical adhesive 50 can also be coated or attached to the display surface 101 , and then related mechanical equipment is used to make the light-transmitting substrate 40 pass through the first optical adhesive 50 and the coated frame The display modules 10 of 20 are connected to each other.

In practical applications, the auxiliary colloid 60 is, for example, a solid glue. When the solid glue is used as the auxiliary colloid 60, the solid glue can have two release papers, and the relevant personnel or mechanical equipment can tear off one of the release papers first. paper, so that the adhesive layer of the solid glue is exposed, so as to be attached to the top surface 2021 of the upper covering part 202 (as shown in FIG. 3 ). When the touch module 70 of the material 40 and the display module 10 covered with the frame body 20 are connected to each other, another release paper of the auxiliary glue 60 can be torn off. Of course, in different embodiments, the auxiliary colloid 60 may also be liquid glue, which is not limited thereto.

It should be noted that the thickness D1 of the auxiliary colloid 60 attached to the top surface 2021 of the upper cladding portion 202 in the normal direction of the display surface 101 (the Z-axis direction of the coordinate system shown in FIG. 3 ) is It is higher than the height H1 of the top surface 2021 of the upper cladding part 202 . That is to say, assuming that the height of the transparent substrate 40 in the normal direction of the display surface 101 higher than the top surface 2021 of the frame body 20 is defined as a predetermined height, the thickness of the auxiliary colloid 60 in the normal direction of the display surface 101 D1 is greater than or equal to the predetermined height.

It is worth mentioning that the sum of the thickness D2 of the transparent substrate 40 in the normal direction of the display surface 101 and the thickness D3 of the first optical adhesive 50 in the normal direction of the display surface 101 is less than or equal to the auxiliary glue 60 in the display surface 101 . The sum of the thickness D1 in the normal direction of the surface 101 and the depth D4 of the accommodating groove SP in the normal direction of the display surface 101 ; expressed in a mathematical formula: D2+D3≦D1+D4. For example, the thickness D2 of the transparent substrate 40 in the normal direction of the display surface 101 is greater than or equal to 0.1 mm, and the thickness D1 of the auxiliary colloid 60 in the normal direction of the display surface 101 is between 0.05 mm and 1.0 mm. The depth D4 of the groove SP (as shown in FIG. 4 ) in the normal direction of the display surface 101 is greater than or equal to 0.1 mm.

The sum of the thickness D2 of the light-transmitting substrate 40 in the normal direction of the display surface 101 and the thickness D5 of the second optical adhesive 80 in the normal direction of the display surface 101 is less than or equal to the normal line of the accommodating groove SP in the display surface 101 The sum of the depth D4 in the direction and the thickness D1 of the auxiliary colloid 60 in the normal direction of the display surface 101 ; expressed in a mathematical formula: D2+D5≦D4+D1. For example, the thickness D2 of the transparent substrate 40 in the normal direction of the display surface 101 is greater than or equal to 0.1 mm, the thickness D5 of the second optical adhesive 80 in the normal direction of the display surface 101 is between 0.05 mm and 1.0 mm, The depth D4 of the accommodating groove SP in the normal direction of the display surface 101 is greater than or equal to 0.1 mm.

The sum of the thickness D2 of the transparent substrate 40 in the normal direction of the display surface 101 and the thickness D5 of the second optical adhesive 80 in the normal direction of the display surface 101 is greater than or equal to the normal line of the accommodating groove SP in the display surface 101 The depth of the direction D4; expressed in mathematical formula: D2+D5≧D4. For example, the thickness D2 of the transparent substrate in the normal direction of the display surface 101 is greater than or equal to 0.1 mm.

In particular, in practical applications, the production error of the depth D4 of the accommodating groove SP formed by the display surface 101 and the frame body 20 is related to the thickness D2 of the transparent substrate 40 in the normal direction of the display surface 101 . are approximately the same. Therefore, if the thickness D2 of the transparent substrate 40 and the depth D4 of the accommodating groove SP are the same as the standard during the production process, the transparent substrate 40 is produced and manufactured. The problem that the optical substrate 40 cannot be correctly placed in the accommodating slot SP may result in that the touch module 70 cannot be smoothly attached to the side of the display module 10 covered with the frame body 20; therefore, the present invention The touch display device A is designed to protrude from the top surface 2021 of the frame body 20 when the light-transmitting substrate 40 is disposed in the accommodating slot SP, which can effectively avoid the above problems.

It is worth mentioning that, in FIG. 4 , the auxiliary colloid 60 is taken as an example of solid glue, and the auxiliary colloid 60 is generally annular, but the shape and quantity of the auxiliary colloid 60 are not limited thereto. For example, the auxiliary colloid 60 can also be in the form of four strips, which are correspondingly attached to the top surface 2021 of the upper covering portion 202 . In this way, the relevant manufacturers can use the light-transmitting substrate 40 , the display surface 101 and the frame according to the 20 of the surface flatness, and by adjusting the thickness of the auxiliary glue 60 disposed at different positions, the surface of the touch module 70 for the user to operate is substantially parallel to the display surface 101 .

As shown in FIG. 5 , it is a schematic cross-sectional view of a second embodiment of the touch display device of the present invention (roughly a schematic view taken along the position of the section line III shown in FIG. 1 ). In different applications, the frame body 20 may further include a bottom cladding portion 203 and an electrical connection module 30 , the bottom cladding portion 203 is connected to the ring cladding portion 201 , and the bottom cladding portion 203 covers the display module 10 . bottom. The ring cladding portion 201 , the upper cladding portion 202 and the bottom cladding portion 203 may be integrally formed components, and are disposed outside the display module 10 through relevant molding steps. Wherein, in the embodiment in which the frame body 20 does not have the bottom cladding portion 203, the whole of the frame body 20 will appear as a hollow rectangular body, while in the embodiment in which the frame body 20 has the bottom cladding portion 203, the frame The body 20 as a whole will appear as a rectangular body with a recess in one side.

Please refer to FIG. 6 and FIG. 7 together. FIG. 6 is a schematic cross-sectional view of a touch display device according to a third embodiment of the present invention (roughly a schematic view taken along the position of section line III shown in FIG. 1 ), and FIG. 7 It is a schematic cross-sectional view from another direction of the third embodiment of the touch display device of the present invention. As shown in the figure, the biggest difference between this embodiment and the previous embodiment is that a predetermined gap S may be formed between the outer edge 40a of the light-transmitting substrate 40 and the inner edge 202a of the upper cladding portion 202; , the width W1 of the light-transmitting substrate 40 on the cross-sectional plane perpendicular to the normal direction of the display surface 101 (the Z-Y plane of the coordinate system shown in the figure) is smaller than the width W1 of the accommodating groove SP perpendicular to the display surface 101 The width W2 of the section plane in the line direction.

As shown in FIG. 7 , when the touch module 70 provided with the translucent substrate 40 and the frame body 20 are fixed to each other, and the translucent substrate 40 is correspondingly located in the accommodating slot SP, the accommodating slot SP will not be transparent When the optical substrate 40 is filled, a ring-shaped groove Sa will remain between the touch module 70 and the display surface 101; in practical applications, a corresponding strip-shaped groove that is not connected to each other may be formed, but not limited to It is an annular groove; through the design of the annular groove Sa, the light-transmitting substrate 40 can have a space for expansion when heated. In other words, in the embodiment of the design without the predetermined gap, if the touch display device A is in a high temperature state for a long time, after the light-transmitting substrate 40 is thermally expanded, it may abut against the frame body 20, which may cause the frame body 20 or the display module 10 is damaged. In addition, through the above-mentioned design of the reserved gap S or the annular groove Sa, the light-transmitting substrate 40 can still be arranged in the accommodating groove SP (as shown in FIG. 4 ) when there are unexpected production tolerances. probability. In practical applications, the distance W3 between the outer edge 40a of the transparent substrate 40 and the inner edge 202a of the upper cladding portion 202 may be less than or equal to 0.3 mm; The distance between the inner edges 202a of the covering portion 202 may vary according to the size of the touch display device A. As shown in FIG.

Please refer to FIG. 8 , which is a schematic diagram of a fourth embodiment of the touch display device of the present invention. As shown in the figure, the biggest difference between this embodiment and the previous embodiments is that the touch display device A may also include a plurality of light-transmitting substrates 40, and the plurality of light-transmitting substrates 40 may be connected to each other through a first The three optical adhesives 90 are connected to each other, and the plurality of light-transmitting substrates 40 connected to each other are fixedly disposed between the touch module 70 and the display surface 101 , and at least a part of at least one of the light-transmitting substrates 40 is higher than Top 2021. The third optical adhesive 90 can be, for example, a liquid transparent optical adhesive OCR (Optically Clear Resin) or a solid transparent optical adhesive OCA (optically clear Adhesive), which is not limited herein.

In practical applications, relevant manufacturers (for example, manufacturers that attach the touch module 70 to the display module) can customize the light-transmitting substrate 40 with different thicknesses, and the relevant manufacturers can place the accommodating groove SP on the display surface 101 . When the depth D4 in the normal direction is deeper than the expected depth, in conjunction with the third optical adhesive 90, an additional light-transmitting substrate 40 with a similar thickness is added. In another practical application, the relevant manufacturer may also determine the number of the light-transmitting substrates 40 according to the depth D4 of the accommodating groove SP in the normal direction.

In other words, through the design of a plurality of light-transmitting substrates 40 , relevant manufacturers can adaptively adjust the number of light-transmitting substrates 40 according to the depth D4 of the accommodating groove SP in the normal direction of the display surface 101 , thereby ensuring that The light-transmitting substrate 40 can be reliably connected to the touch module 70 and the display surface 101 , thereby avoiding the need to use a large amount of optical glue in order to ensure that the light-transmitting substrate 40 can be in contact with the display surface 101 , thereby resulting in a substantial increase in cost. The problem.

In the actual manufacturing process, the depth D4 of the accommodating groove SP in the normal direction of the display surface 101 may be different from the original expected due to various reasons, such as the production tolerance of the frame body 20, the production tolerance of the display module 10, etc. The depths are different, so if the originally predetermined light-transmitting substrate 40 is connected to the display module 10 covered with the frame body 20, an air layer may be formed between the light-transmitting substrate 40 and the display surface 101, and the user may When viewing the display screen displayed on the display surface 101 through the touch module 70, problems such as overlapping images will be seen; therefore, through the design of the plurality of light-transmitting substrates 40 in the above-mentioned embodiment, overlapping can be effectively avoided The occurrence of shadowing and other problems.

Please refer to FIG. 9 , which is a schematic diagram of a fifth embodiment of the touch display device of the present invention. As shown in the figure, the biggest difference between this embodiment and the previous embodiment is that a functional component 100 may be disposed between the light-transmitting substrate 40 and the display surface 101 , and the functional component 100 may be, for example, an anti-electromagnetic interference sheet, One of polarizers and privacy films. Of course, in practical applications, the functional element 100 may also be disposed between the transparent substrate 40 and the touch module 70 .

Please refer to FIG. 10 , which is a schematic diagram of a sixth embodiment of the touch display device of the present invention. As shown in the figure, the biggest difference between this embodiment and the foregoing embodiments is that the touch display device A may further include a first indium tin oxide layer 110 and a second indium tin oxide layer 120 . The first indium tin oxide layer 110 may be formed on the side of the transparent substrate 40 facing the display surface 101 , the second indium tin oxide layer 120 may be formed in the touch module 70 , and the first indium tin oxide layer Both the 110 and the second indium tin oxide layer 120 can cooperate with each other, so that when the touch module 70 is operated, the X-axis coordinate information and the Y-axis coordinate information are correspondingly generated. In other words, the light-transmitting substrate 40 and the first indium tin oxide layer 110, together with the touch module 70, can be used as a touch device with a complete control function.

Please refer to FIG. 11 , which is a schematic diagram of a seventh embodiment of the touch display device of the present invention. As shown in the figure, the biggest difference between this embodiment and the previous embodiments is that the first indium tin oxide layer 110 can also be formed on the side of the transparent substrate 40 away from the display surface 101 , and the first indium tin oxide layer 110 110 is correspondingly located between the transparent substrate 40 and the second optical adhesive 80 . Specifically, in the manufacturing process, the first indium tin oxide layer 110 may be formed on one side of the transparent substrate 40 , and then the second optical adhesive 80 is used to make the transparent material having the first indium tin oxide layer 110 . The optical substrate 40 and the touch module 70 are bonded to each other. Of course, the first indium tin oxide layer 110 and the second indium tin oxide layer 120 included in the light-transmitting substrate 40 and the touch module 70 that are bonded to each other are located at positions opposite to each other, and the two can be mutually The function is to generate the X-axis coordinate information and the Y-axis coordinate information correspondingly when the touch module 70 is operated. In different applications, when the touch module 70 is operated, the first ITO layer 110 can also generate Y-axis coordinate data, and the second ITO layer 120 can also generate X-axis coordinate data correspondingly.

To sum up, in the existing industrial touch display device, a large material cost comes from the optical glue, and the touch display device of the present invention can effectively reduce the optical glue through the arrangement of the light-transmitting substrate. Therefore, the overall manufacturing cost of the touch display device can be greatly reduced. In addition, in the existing industrial touch display devices, a large amount of optical water glue is used to connect related components, but because the thickness of the optical water glue is not easy to control, it is easy to appear in the final product similar to water ripples (Mura ) defects; the touch display device of the present invention can greatly reduce the probability of occurrence of water ripple defects through the arrangement of the light-transmitting substrate.

Claims (12)

1. A touch display device, comprising:

the display module can be powered to independently operate, the display module is provided with a display surface, and one side of the display module opposite to the display surface is defined as a bottom surface; when the display module is powered on and operates, the display surface can present a display picture;

the frame body is fixedly arranged on the periphery of the display module and comprises a ring wrapping part and an upper wrapping part, the ring wrapping part is wrapped on the periphery of the display module in a surrounding manner, the upper wrapping part is connected with the ring wrapping part, the upper wrapping part is correspondingly positioned on one side of the display surface of the display module, and an accommodating groove is formed by the upper wrapping part and the display surface;

the transparent substrate is arranged in the accommodating groove correspondingly through a first optical adhesive in a fit manner, the part of the transparent substrate far away from the display surface is higher than a top surface of the upper cladding part, and the top surface is positioned on one side of the upper cladding part far away from the display surface; the height of the transparent substrate higher than the top surface in the normal direction of the display surface is defined as a preset height; wherein the light-transmitting substrate is not formed by curing an optical cement;

the auxiliary colloid is arranged on the top surface, and the thickness of the auxiliary colloid in the normal direction of the display surface is greater than or equal to the preset height; and

the touch module is arranged on one side, away from the display module, of the light-transmitting substrate in a fit mode through second optical cement, and the touch module is arranged on the top face in a fit mode through the auxiliary adhesive; the upper coating part, the light-transmitting substrate and the display module are correspondingly positioned in the range of the orthographic projection of the touch control module towards one side of the light-transmitting substrate; the percentage difference between the refractive index of the touch module and the refractive index of the light-transmitting substrate is between zero and one percent to five percent.

2. The touch display device according to claim 1, wherein a sum of a thickness of the transparent substrate in a normal direction of the display surface and a thickness of the first optical adhesive in the normal direction of the display surface is less than or equal to a sum of a thickness of the auxiliary adhesive in the normal direction of the display surface and a depth of the accommodating groove in the normal direction of the display surface; the thickness of the transparent substrate in the normal direction of the display surface is greater than or equal to 0.1 mm, the thickness of the auxiliary colloid in the normal direction of the display surface is between 0.05 mm and 1.0 mm, and the depth of the accommodating groove in the normal direction of the display surface is greater than or equal to 0.1 mm.

3. The touch display device according to claim 1, wherein a sum of a thickness of the transparent substrate in a normal direction of the display surface and a thickness of the second optical adhesive in the normal direction of the display surface is less than or equal to a sum of a depth of the accommodating groove in the normal direction of the display surface and a thickness of the auxiliary adhesive in the normal direction of the display surface; the thickness of the transparent substrate in the normal direction of the display surface is greater than or equal to 0.1 mm, the thickness of the auxiliary colloid in the normal direction of the display surface is between 0.05 mm and 1.0 mm, and the depth of the accommodating groove in the normal direction of the display surface is greater than or equal to 0.1 mm.

4. The touch display device of claim 1, wherein a predetermined gap is formed between an outer edge of the transparent substrate and an inner edge of the upper cladding portion, and a distance between the outer edge of the transparent substrate and the inner edge of the upper cladding portion is less than or equal to 0.3 mm.

5. The touch display device according to claim 1, wherein the touch display device comprises a plurality of the transparent substrates, the plurality of the transparent substrates are connected to each other through a third optical adhesive, the plurality of the transparent substrates connected to each other are disposed in the accommodating groove, and a portion of at least one of the transparent substrates is higher than the top surface.

6. The touch display device of claim 1, wherein the frame further comprises a bottom cover and an electrical connection module, the bottom cover is connected to the ring cover, the bottom cover covers the bottom of the display module, the electrical connection module comprises at least one electrical connector, and the display module can be electrically connected to an external control device through the electrical connector to receive power and image signals provided by the external control device; a functional piece is arranged between the light-transmitting substrate and the display surface or between the light-transmitting substrate and the touch module, and the functional piece is one of an anti-electromagnetic interference piece, a polaroid and an anti-peeping piece.

7. A touch display device, comprising:

the display module can be powered to independently operate, the display module is provided with a display surface, and one side of the display module opposite to the display surface is defined as a bottom surface; when the display module is powered on and operates, the display surface can present a display picture;

the frame body is fixedly arranged on the periphery of the display module and comprises a ring coating part and an upper coating part, the ring coating part is coated on the periphery of the display module in a surrounding manner, the upper coating part is connected with the ring coating part, the upper coating part is correspondingly positioned on one side of the display surface of the display module, and an accommodating groove is formed by the upper coating part and the display surface; the transparent substrate is arranged on the display surface in a fit mode through first optical cement, the transparent substrate is correspondingly positioned in the accommodating groove, and the part, far away from the display surface, of the transparent substrate is higher than the top surface, far away from the display surface, of the upper cladding part; the height of the transparent substrate higher than the top surface in the normal direction of the display surface is defined as a preset height;

the first indium tin oxide layer is formed on one side, facing the display surface, of the light-transmitting substrate or one side far away from the display surface;

the second optical cement is arranged on the top surface, and the thickness of the second optical cement in the normal direction of the display surface is greater than or equal to the preset height;

the touch module is arranged on one side, away from the display module, of the light-transmitting substrate in a bonding mode through second optical cement, and the touch module is arranged on the top surface in a bonding mode through the second optical cement; the upper coating part, the light-transmitting substrate and the display module are correspondingly positioned in the range of the orthographic projection of the touch control module towards one side of the light-transmitting substrate; the touch module comprises a second indium tin oxide layer, and the first indium tin oxide layer and the second indium tin oxide layer can be matched with each other so as to correspondingly generate an X-axis position signal and a Y-axis position signal when the touch module is touched; the percentage difference between the refractive index of the touch module and the refractive index of the light-transmitting substrate is between zero and one percent to five percent.

8. The touch display device according to claim 7, wherein a sum of a thickness of the transparent substrate in a normal direction of the display surface and a thickness of the first optical adhesive in the normal direction of the display surface is less than or equal to a sum of a thickness of the auxiliary adhesive in the normal direction of the display surface and a depth of the accommodating groove in the normal direction of the display surface; the thickness of the transparent substrate in the normal direction of the display surface is greater than or equal to 0.1 mm, the thickness of the auxiliary colloid in the normal direction of the display surface is between 0.05 mm and 1.0 mm, and the depth of the accommodating groove in the normal direction of the display surface is greater than or equal to 0.1 mm.

9. The touch display device according to claim 7, wherein a sum of a thickness of the transparent substrate in a normal direction of the display surface and a thickness of the second optical adhesive in the normal direction of the display surface is less than or equal to a sum of a depth of the accommodating groove in the normal direction of the display surface and a thickness of the auxiliary adhesive in the normal direction of the display surface; the thickness of the transparent substrate in the normal direction of the display surface is greater than or equal to 0.1 mm, the thickness of the auxiliary colloid in the normal direction of the display surface is between 0.05 mm and 1.0 mm, and the depth of the accommodating groove in the normal direction of the display surface is greater than or equal to 0.1 mm.

10. The touch display device of claim 7, wherein a predetermined gap is formed between an outer edge of the transparent substrate and an inner edge of the upper cladding portion, and a distance between the outer edge of the transparent substrate and the inner edge of the upper cladding portion is less than or equal to 0.3 mm.

11. The touch display device according to claim 7, wherein the touch display device comprises a plurality of the transparent substrates, the plurality of the transparent substrates are connected to each other through a third optical adhesive, the plurality of the transparent substrates connected to each other are disposed in the accommodating groove, and a portion of at least one of the transparent substrates is higher than the top surface.

12. The touch display device of claim 7, wherein the frame further comprises a bottom cover and an electrical connection module, the bottom cover is connected to the ring cover, the bottom cover covers the bottom of the display module, the electrical connection module comprises at least one electrical connector, and the display module can be electrically connected to an external control device through the electrical connector to receive power and image signals provided by the external control device; a functional piece is arranged between the light-transmitting substrate and the display surface or between the light-transmitting substrate and the touch module, and the functional piece is one of an anti-electromagnetic interference piece, a polaroid and an anti-peeping piece.

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