A laminated precision touch display screen

Abstract

The present invention discloses a fitted precision touch display screen, which relates to the field of touch screen technology, including a touch display screen and a frame, wherein the frame is provided with a groove for positioning and installing the touch display screen, and further comprising: a sealing ring provided in the gap between the touch display screen and the frame, wherein the outer wall of the sealing ring is provided with an inner groove, and the cross section of the inner groove is trapezoidal, and the cross section gradually decreases from the outside to the inside; a back panel that can be sealed and installed on the back of the frame, wherein the outer wall of the back panel is provided with a top frame, and when the back panel is sealed and installed with the frame, the top frame is inserted into the inner groove and squeezes the sealing ring outwards through the inclined surface of the inner groove. The present invention can prevent dust, moisture or other foreign matter from entering the frame to cause damage to the interior of the display screen or a decline in its function, and at the same time, it can facilitate the separation of the touch display screen and the frame during disassembly or maintenance, thereby achieving the purpose of facilitating installation and disassembly.

Description

Technical Field

[0001] The present invention relates to the technical field of touch screens, and in particular to a laminated precision touch display screen. Background Art

[0002] As the name suggests, a touch screen allows users to operate the host by lightly touching the icons or text on the screen with their fingers, eliminating the extra operations of the mouse and keyboard, making human-computer interaction easier, and is therefore used in different occasions and environments.

[0003] At present, some display screens adopt a borderless or narrow border design to increase the screen's usable area and visual effect, while some display screens adopt a wider border design to facilitate installation and fixation, such as multimedia teaching screens, information query in public halls, or outdoor exhibition screens. Among them, whether the display screen and the border need to be sealed depends on different application scenarios and user needs. Its purpose is to prevent dust, moisture or other foreign substances from entering the interior of the display screen and causing damage to the display screen or degradation of its function.

[0004] The existing sealing process is to fill glue between the display screen and the frame to achieve the purpose of sealing. However, when the display screen fails or needs to be disassembled, the glue needs to be heated and melted to separate the two, making the subsequent disassembly process more difficult. Summary of the Invention

[0005] The object of the present invention is to provide a laminated precision touch display screen to solve at least one technical problem existing in the above-mentioned prior art.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: a laminated precision touch screen display, comprising a touch screen display and a frame, wherein the frame is provided with a groove for positioning and installing the touch screen display, and further comprising:

[0007] A sealing ring is provided in the gap between the touch screen and the frame, wherein the outer wall of the sealing ring is provided with an inner groove, and the cross section of the inner groove is trapezoidal and gradually decreases from the outside to the inside;

[0008] A back panel that can be sealed and installed on the back of the frame has a top frame on its outer wall. When the back panel and the frame are sealed and installed, the top frame is inserted into the inner groove and squeezes the sealing ring outward through the inclined surface of the inner groove, thereby forming a closed space between the top frame and the touch display screen.

[0009] Preferably, the outer wall of the back panel is integrally formed with an inner frame, the outer frame wall of the inner frame can fit tightly with the inner frame wall of the frame, the outer wall of the inner frame extending into the frame is provided with a sliding cavity, the top frame is slidably installed in the sliding cavity, and a first spring is connected between the top frame and the sliding cavity, and an exhaust port connected to the sliding cavity is provided on the inner frame wall of the inner frame.

[0010] Preferably, the inner frame wall of the inner frame is further provided with a groove for installing an elastic airbag, the elastic airbag is arranged in a square circle, the outer ring wall of the elastic airbag is fixed to the inner wall of the groove, and is a hard part, the hard part is provided with a rubber block, the inner frame wall of the frame is provided with a ventilation cavity, a slide is slidably installed in the ventilation cavity, a puncture needle communicating with the interior of the ventilation cavity is fixed on the outer wall of the slide, and a hole for the puncture needle to pass through is provided at a position corresponding to the puncture needle on the inner frame;

[0011] It also includes an inflation component. When the air pressure between the inner frame and the touch display screen returns to normal pressure, the inflation component inflates the ventilation cavity and pushes the slide plate to move, so that the puncture needle passes through the rubber block, connecting the ventilation cavity with the elastic airbag.

[0012] Preferably, the inflation component includes an installation cavity provided in the frame for embedding the air bag, and the installation cavity is connected to the ventilation cavity through a connecting cavity. The air bag is filled with high-pressure gas, and part of the air bag will be squeezed into the connecting cavity. An intermediate hole is provided through the position of the inner frame corresponding to the connecting cavity, and an adjustment block is slidably installed on the inner wall of the intermediate hole. A top block is fixed on the inner wall of the connecting cavity near the installation cavity, and a second spring that can contact the top block is provided on the outer wall of the adjustment block. When the second spring contacts the top block and is compressed, the adjustment block passes over the top block and isolates the connecting cavity.

[0013] Preferably, an adhesive layer is attached to the outer circle of the touch screen corresponding to the position of the elastic airbag, and when the elastic airbag is expanded, the inner circle wall adheres to the adhesive layer.

[0014] Preferably, the adhesive layer is made of easy-to-pull adhesive, the adhesive layer is arranged in sections and connected end to end in sequence, a pulling portion is provided at the beginning or end of the adhesive layer, the back panel is composed of a back frame and an inner detachable panel that can be detached from each other, and the inner frame and the back frame are integrally formed, and the back frame and the inner detachable panel are sealed and installed.

[0015] Preferably, a discharge electrode for discharging is installed on the inner wall of the ventilation chamber, an observation port is provided at a position of the frame close to the ventilation chamber, and the observation port is made of a transparent material through which the interior of the ventilation chamber can be seen, and the interior of the air storage bag is filled with rare gas. When the rare gas enters the ventilation chamber, colored light is emitted under the discharge action of the discharge electrode.

[0016] Preferably, a shock-absorbing pad is provided at the contact position between the touch display screen and the frame.

[0017] Preferably, the back frame and the touch display screen are connected as well as the back frame and the inner detachable plate are connected by bolts, and sealing gaskets are provided at the connection points.

[0018] Preferably, the rare gas in the gas storage bag is neon, argon or helium.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] Compared to the method of bonding the display screen and the frame by filling glue between them to achieve the purpose of fitting and sealing, the present invention can prevent dust, moisture or other foreign matter from entering the frame and causing damage to the interior of the display screen or degradation of its function. At the same time, it can also facilitate the separation of the touch display screen and the frame during disassembly or maintenance, thereby achieving the purpose of easy installation and disassembly, which is more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A top perspective view of the touch screen display and frame of the present invention;

[0022] Figure 2 A bottom-up stereoscopic view of the touch screen display and frame of the present invention;

[0023] Figure 3 A cross-sectional view and a partially enlarged view of the touch display screen and frame of the present invention;

[0024] Figure 4 is a cross-sectional view of the sealing ring of the present invention;

[0025] Figure 5 For the present invention Figure 3 Cross-sectional perspective views and partial magnified views;

[0026] Figure 6 It is a partial cross-sectional view of the back panel of the present invention when it is not installed with the frame;

[0027] Figure 7 It is a three-dimensional diagram and a partial enlarged diagram of the sealing ring of the present invention.

[0028] In the figure: 1. Touch screen; 2. Frame; 3. Back frame; 4. Inner disassembly panel; 5. Sealing ring; 6. Inner frame; 7. Top frame; 8. First spring; 9. Exhaust port; 10. Elastic airbag; 11. Rubber block; 12. Adhesive layer; 13. Ventilation chamber; 14. Slide plate; 15. Needle; 16. Discharge electrode; 17. Inner groove; 18. Shock-absorbing pad; 19. Middle hole; 20. Adjustment block; 21. Air bag; 22. Connecting chamber; 23. Top block; 24. Second spring. DETAILED DESCRIPTION

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0030] Embodiment 1;

[0031] See also Figures 1 to 7 The present invention provides a technical solution: a laminated precision touch screen display, comprising a touch screen display 1 and a frame 2, wherein the frame 2 is provided with a groove for positioning and installing the touch screen display 1, and further comprising:

[0032] The sealing ring 5 is provided in the gap between the touch screen 1 and the frame 2. The outer wall of the sealing ring 5 is provided with an inner groove 17. The cross section of the inner groove 17 is trapezoidal and gradually decreases from the outside to the inside.

[0033] The back panel can be sealed and installed on the back of the frame 2. The outer wall of the back panel is provided with a top frame 7. When the back panel and the frame 2 are sealed and installed, the top frame 7 is inserted into the inner groove 17 and squeezes the sealing ring 5 outward through the inclined surface of the inner groove 17, so that a closed space is formed between the top frame 7 and the touch display screen 1.

[0034] Compared to the method of bonding the display screen and the frame with glue to achieve the purpose of fitting and sealing, in this case, a sealing ring 5 is installed in the gap between the touch display screen 1 and the frame 2, and the inner and outer rings of the sealing ring 5 are respectively fitted with the outer walls of the frame 2 and the touch display screen 1. When the back panel and the frame 2 are installed, as the top frame 7 is inserted into the inner groove 17, the right-angled corners of the top frame 7 will expand the sealing ring 5 outward through the stepped slope of the inner groove 17, so that the sealing ring 5 further seals the gap between the touch display screen 1 and the frame 2, and forms a closed space between the top frame 7, the touch display screen 1, the back panel and the expanded sealing ring 5.

[0035] This can prevent dust, moisture or other foreign matter from entering the frame 2 and causing damage to the interior of the display screen or degradation of its function. At the same time, when disassembling or maintaining, the back panel can be removed to release the expansion effect on the sealing ring 5, thereby facilitating the separation of the touch screen 1 and the frame 2, achieving the purpose of facilitating precise installation and disassembly, which is more convenient.

[0036] In one of the more preferred embodiments, the outer wall of the back panel is integrally formed with an inner frame 6, the outer frame wall of the inner frame 6 can fit tightly with the inner frame wall of the frame 2, the outer wall of the inner frame 6 extending into the frame 2 is provided with a sliding cavity, the top frame 7 is slidably installed in the sliding cavity, and a first spring 8 is connected between the top frame 7 and the sliding cavity, and an exhaust port 9 connected to the sliding cavity is provided on the inner frame wall of the inner frame 6.

[0037] Based on the above seal installation, see Figure 3 When the top frame 7 is inserted into the inner groove 17, it will reversely compress the first spring 8 and discharge the air in the sliding cavity from the exhaust port 9 into the above-mentioned enclosed space, thereby creating an internal high-pressure state. This is equivalent to utilizing the elastic force of the first spring 8 to keep the top frame 7 inserted into the inner groove 17. At the same time, a high-pressure state is maintained between the top frame 7 and the inner frame 6 and the touch display screen 1. In this way, even if the sealing ring 5 leaks due to long-term use and aging, it will exhaust air to the outside under the internal high-pressure environment. Before the internal pressure returns to normal, the airflow can still be discharged to prevent the entry of dust, moisture or other foreign substances.

[0038] Embodiment 2;

[0039] Based on the above embodiment, if the sealing ring 5 can ensure the sealing performance, then the high pressure state will be maintained between the inner frame 6 and the touch screen display 1. However, as the sealing ring 5 ages and loses its sealing performance over a long period of use, it is equivalent to losing the sealing performance between the frame 2 and the touch screen display 1. Therefore, in the second embodiment, a method is provided to further ensure the sealing effect between the frame 2 and the touch screen display 1 after the sealing ring 5 loses its sealing performance, as follows;

[0040] The inner wall of the inner frame 6 is further provided with a groove for installing an elastic airbag 10. The elastic airbag 10 is arranged in a square circle. The outer wall of the elastic airbag 10 is fixed to the inner wall of the groove and is a hard part. A rubber block 11 is provided on the hard part. The inner wall of the frame 2 is provided with a ventilation cavity 13. A slide 14 is slidably installed in the ventilation cavity 13. A puncture needle 15 communicating with the interior of the ventilation cavity 13 is fixed to the outer wall of the slide 14. A hole for the puncture needle 15 to pass through is provided at the position corresponding to the puncture needle 15 in the inner frame 6.

[0041] It also includes an inflation component. When the air pressure between the inner frame 6 and the touch screen 1 returns to normal pressure, the inflation component inflates the ventilation chamber 13 and pushes the slide plate 14 to move, so that the puncture needle 15 passes through the rubber block 11, connecting the ventilation chamber 13 with the elastic airbag 10.

[0042] However, when the sealing ring 5 loses its sealing performance, as the internal gas leaks, the air pressure between the inner frame 6 and the touch display screen 1 will gradually return to normal pressure. At this time, the inflation component inflates the ventilation chamber 13, and the air pressure in the ventilation chamber 13 increases. First, it will push the slide plate 14 to slide, and the puncture needle 15 on it will pass through the rubber block 11, connecting the ventilation chamber 13 with the elastic airbag 10. At this time, the gas in the ventilation chamber 13 will be filled into the elastic airbag 10. As the gas enters, the elastic airbag 10 also expands toward the middle until it fits tightly with the outer ring wall of the touch display screen 1. In this way, the inner ring of the elastic airbag 10 expands, thereby achieving the purpose of secondary sealing, and then the sealing ring 5 can still serve the purpose of isolating and protecting the touch display screen 1 after losing its sealing performance.

[0043] In one of the more preferred embodiments, an implementation of an inflatable component is provided;

[0044] The inflation component includes an installation cavity provided in the frame 2 for embedding the air bag 21, and the installation cavity is connected to the ventilation cavity 13 through a connecting cavity 22. The air bag 21 is filled with high-pressure gas, and part of the air bag 21 will be squeezed into the connecting cavity 22. An intermediate hole 19 is provided through the position of the inner frame 6 corresponding to the connecting cavity 22, and an adjusting block 20 is slidably installed on the inner wall of the intermediate hole 19. A top block 23 is fixed to the inner wall of the connecting cavity 22 near the installation cavity, and a second spring 24 that can contact the top block 23 is provided on the outer wall of the adjusting block 20. When the second spring 24 contacts the top block 23 and is compressed, the adjusting block 20 passes over the top block 23 and isolates the connecting cavity 22.

[0045] Please refer to the inflatable components for details. Figure 6 and Figure 3 , which correspond to the states before and after the back panel is installed;

[0046] See Figure 3 As can be seen from the above, after the back panel is installed, a high-pressure state is formed between the inner frame 6 and the touch screen 1. Under this high-pressure state, the adjustment block 20 slides into the communication cavity 22 until the second spring 24 contacts and is compressed by the top block 23. The adjustment block 20 then passes over the top block 23 and blocks the communication cavity 22, separating the installation cavity of the air storage bag 21 from the ventilation cavity 13. This is equivalent to using the high pressure between the inner frame 6 and the touch screen 1 to compress the second spring 24.

[0047] It is worth noting that, since part of the air bag 21 will be squeezed into the communication cavity 22 under the action of the internal air pressure, the second spring 24 will press the squeezed part of the air bag 21 when it is compressed, causing the air bag 21 to rupture and release the high-pressure gas inside into the installation cavity. Since the communication cavity 22 is isolated, the high pressure state in the installation cavity is maintained.

[0048] Then, after the sealing ring 5 loses its sealing performance, the space between the inner frame 6 and the touch display screen 1 gradually returns to normal pressure. At this time, the elastic force of the second spring 24 is sufficient to overcome the air pressure between the inner frame 6 and the touch display screen 1, so that it slides back to the middle hole 19, thereby releasing the partition effect on the connecting cavity 22 and connecting the upper and lower parts. At this time, the high-pressure gas in the installation cavity will enter the ventilation cavity 13, thereby achieving the inflation effect.

[0049] In this way, the change in air pressure between the inner frame 6 and the touch screen 1 can be used to regulate the expansion of the elastic airbag 10 in the first time, so as to perform a secondary sealing process.

[0050] It is worth mentioning that the above-mentioned structure is provided at the four sides of the frame 2 to ensure that the air pressure filled into the elastic airbag 10 is sufficient during the secondary sealing.

[0051] In one of the more preferred embodiments, an adhesive layer 12 is attached to the outer ring of the touch screen display 1 corresponding to the position of the elastic airbag 10 , and when the elastic airbag 10 is expanded, the inner ring wall adheres to the adhesive layer 12 .

[0052] The provision of the adhesive layer 12 can further improve the secondary sealing performance between the elastic airbag 10 and the touch display screen 1 .

[0053] On the basis of the above embodiment, the adhesive layer 12 adopts easy-to-pull adhesive, the adhesive layer 12 is arranged in sections and connected end to end in sequence, and a pulling part is provided at the head or tail end of the adhesive layer 12. The back panel is composed of a back frame 3 and an inner detachable panel 4 that can be detached from each other, and the inner frame 6 is integrally formed with the back frame 3, and the back frame 3 and the inner detachable panel 4 are sealed and installed.

[0054] The adhesive layer 12 is made of easy-to-pull adhesive, which can not only serve the purpose of adhering the elastic airbag 10, but also during the disassembly process, the back frame 3 can be separated from the inner disassembly plate 4 first, the inner disassembly plate 4 can be removed first, and then tweezers or other clamps can be used to pull out the segmented easy-to-pull adhesive through the pulling part. Although this also uses a bonding method, it is easier to disassemble than bonding methods such as glue, and can also reduce the impact on the elastic airbag 10.

[0055] It is worth mentioning that if the sealing ring 5 is disassembled while it is still effective, the elastic airbag 10 has not yet expanded and adhered to the adhesive layer 12, so the back frame 3 can be directly disassembled, and then the middle hole 19 and the connecting cavity 22 will directly cut off the adjustment block 20, and then a new adjustment block 20 can be replaced when reinstalling.

[0056] Embodiment 3;

[0057] In order to remind or warn the user that the sealing ring 5 has lost its sealing effect and the secondary seal has been activated, an implementation method of reminding is provided during the process of activating the secondary seal;

[0058] In one of the more preferred embodiments, a discharge electrode 16 for discharging is installed on the inner wall of the ventilation chamber 13, an observation port is opened near the ventilation chamber 13 of the frame 2, and the observation port is made of a transparent material that allows the interior of the ventilation chamber 13 to be seen. The interior of the air storage bag 21 is filled with rare gas. When the rare gas enters the ventilation chamber 13, it emits colored light under the discharge action of the discharge electrode 16.

[0059] When the secondary seal is not activated, the rare gas in the air storage bag 21 has not yet been filled into the ventilation chamber 13, so the discharge of the discharge electrode 16 cannot cause the internal air to emit colored light.

[0060] When the secondary seal is activated, that is, after the communication cavity 22 is connected, the rare gas enters the ventilation cavity 13 and mixes with the air, and emits colored light under the discharge action of the discharge electrode 16. The observer can observe it intuitively through the observation port to achieve the purpose of warning;

[0061] It is worth mentioning that due to the use of the touch screen 1, its own brightness may affect the observer's observation of the observation port. Since the rare gas will push the slide plate 14 to slide after entering the ventilation chamber 13, and will also flow into the elastic airbag 10 through the needle 15, the rare gas in the ventilation chamber 13 will first be in a flowing state, and the flow of gas will cause changes in parameters such as gas pressure, temperature, density and composition, thereby affecting the degree of ionization and spectral characteristics of the rare gas. The intuitive reflection is that the emitted light will be unstable, resulting in a flickering effect. In this way, the flickering of light can more easily trigger the observer's visual capture, thereby improving the warning effect.

[0062] In one of the more preferred embodiments, a shock-absorbing pad 18 is provided at the contact position between the touch screen 1 and the frame 2 .

[0063] Providing a shock-absorbing pad 18 at the contact position between the edge of the visible area of the touch screen 1 and the frame 2 can appropriately increase the elasticity, thereby reducing the impact on the screen when a forceful touch is applied.

[0064] In one of the more preferred embodiments, the back frame 3 and the touch screen display 1, as well as the back frame 3 and the inner detachable plate 4 are connected by bolts, and sealing gaskets are provided at the connections.

[0065] In one preferred embodiment, the rare gas in the gas storage bag 21 is neon, argon or helium.

[0066] Different rare gases emit different light. The type of rare gas can be selected according to the actual usage scenario and user needs for greater practicality.

[0067] The standard parts used in this embodiment can be purchased directly from the market, and the non-standard structural components recorded in the specification and drawings can also be directly processed according to existing technical common sense without any doubt. At the same time, the connection method of each component adopts the mature conventional means in the existing technology, and the machinery, parts and equipment all adopt conventional models in the existing technology, so no specific description will be given here.

[0068] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A laminated precision touch display screen, comprising a touch display screen (1) and a frame (2), characterized in that: The frame (2) is provided with a groove for positioning and installing the touch display screen (1), and further includes: a sealing ring (5) arranged in the gap between the touch display screen (1) and the frame (2), the outer wall of the sealing ring (5) is provided with an inner groove (17), and the cross section of the inner groove (17) is trapezoidal and gradually decreases from the outside to the inside; a back panel that can be sealed and installed on the back of the frame (2), the outer wall of the back panel is provided with a top frame (7), when the back panel and the frame (2) are sealed and installed, the top frame (7) is inserted into the inner groove (17), and the sealing ring (5) is squeezed outwards through the inclined surface of the inner groove (17), so that a closed space is formed between the top frame (7) and the touch display screen (1); The outer wall of the back panel is integrally formed with an inner frame (6), the outer frame wall of the inner frame (6) and the inner frame wall of the frame (2) can be tightly fitted, the outer wall of the inner frame (6) extending into the frame (2) is provided with a sliding cavity, the top frame (7) is slidably installed in the sliding cavity, and a first spring (8) is connected between the top frame (7) and the sliding cavity, and an exhaust port (9) communicating with the sliding cavity is provided on the inner frame wall of the inner frame (6); The inner frame wall of the inner frame (6) is also provided with a groove for installing an elastic airbag (10), the elastic airbag (10) is arranged in a square circle, the outer ring wall of the elastic airbag (10) is fixed to the inner wall of the groove, and is a hard part, the hard part is provided with a rubber block (11), the inner frame wall of the frame (2) is provided with a ventilation cavity (13), a slide plate (14) is slidably installed in the ventilation cavity (13), a puncture needle (15) communicating with the interior of the ventilation cavity (13) is fixed on the outer wall of the slide plate (14), and a hole for the puncture needle (15) to pass through is provided at the position corresponding to the puncture needle (15) of the inner frame (6); The device further comprises an inflation component. When the air pressure between the inner frame (6) and the touch display screen (1) returns to a normal pressure state, the inflation component inflates the ventilation chamber (13) and pushes the slide plate (14) to move, so that the puncture needle (15) passes through the rubber block (11), thereby connecting the ventilation chamber (13) with the elastic airbag (10).

2. The laminated precision touch display according to claim 1, characterized in that: The inflatable component includes an installation cavity provided in the frame (2) for embedding the air bag (21), and the installation cavity is connected to the ventilation cavity (13) through a connecting cavity (22). The air bag (21) is filled with high-pressure gas, and part of the air bag (21) will be squeezed into the connecting cavity (22). The inner frame (6) is provided with an intermediate hole (19) at a position corresponding to the connecting cavity (22). An adjusting block (20) is slidably installed on the inner wall of the intermediate hole (19). A top block (23) is fixed to the inner wall of the connecting cavity (22) near the installation cavity. A second spring (24) capable of contacting the top block (23) is provided on the outer wall of the adjusting block (20). When the second spring (24) contacts the top block (23) and is compressed, the adjusting block (20) passes over the top block (23) and isolates the connecting cavity (22).

3. The laminated precision touch display according to claim 2, characterized in that: An adhesive layer (12) is attached to the outer ring of the touch display screen (1) corresponding to the position of the elastic airbag (10), and when the elastic airbag (10) is expanded, the inner ring wall is adhered to the adhesive layer (12).

4. The laminated precision touch display according to claim 3, characterized in that: The adhesive layer (12) is made of easy-to-pull adhesive. The adhesive layer (12) is arranged in sections and connected end to end in sequence. A pulling portion is provided at the beginning or end of the adhesive layer (12). The back panel is composed of a back frame (3) and an inner detachable panel (4) that can be detached from each other. The inner frame (6) and the back frame (3) are integrally formed, and the back frame (3) and the inner detachable panel (4) are sealed and installed.

5. The laminated precision touch display according to claim 4, characterized in that: A discharge electrode (16) for discharging is installed on the inner wall of the ventilation chamber (13); an observation port is provided on the frame (2) near the ventilation chamber (13); and the observation port is made of a transparent material through which the interior of the ventilation chamber (13) can be seen; the interior of the gas storage bag (21) is filled with rare gas; when the rare gas enters the ventilation chamber (13), it emits colored light under the discharge action of the discharge electrode (16).

6. The laminated precision touch display according to claim 5, characterized in that: A shock-absorbing pad (18) is provided at the contact position between the touch display screen (1) and the frame (2).

7. The laminated precision touch display according to claim 6, characterized in that: The back frame (3) and the touch display screen (1), as well as the back frame (3) and the inner disassembly plate (4) are connected by bolts, and sealing gaskets are provided at the connection points.

8. The laminated precision touch display screen according to claim 7, characterized in that: The rare gas in the gas storage bag (21) is neon, argon or helium.

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