Display device and medical endoscope device

Abstract

The display device comprises a display panel, a cover plate located on the light-emitting side of the display panel, a backlight module arranged on the side of the display panel away from the cover plate, and a middle frame. The middle frame comprises a first part configured to support the display panel, and a second part connected to the first part and extending from the first part to the side away from the cover plate. The second part is arranged around the backlight module on the side of the backlight module. The display device further comprises a first space between the first part and the cover plate. The first side of the first space is limited by the cover plate, the second side of the first space is limited by the first part, and the first side of the first space is arranged opposite to the second side of the first space. The structure of the display device is more stable, so that when the display device is used as a surgical endoscopy display device, the diseased tissue of a patient can be accurately observed, thereby improving the accuracy and efficiency of surgery.

Description

Technical Field

[0001] Embodiments of this disclosure relate to a display device and a medical endoscope. Background Technology

[0002] Liquid crystal displays (LCDs) have advantages such as low radiation and thinness, and are widely used in the display field. Thin film transistor liquid crystal displays (TFT-LCDs) are even more widely used due to their high brightness and wide viewing angle. A conventional TFT-LCD consists of a backlight module, an upper polarizer, a liquid crystal display panel, and a lower polarizer, with the liquid crystal display panel disposed between the upper and lower polarizers. The backlight module is located on the side of the lower polarizer away from the upper polarizer, and the light transmission axes of the upper and lower polarizers are perpendicular to each other. The liquid crystal display panel includes an upper substrate, a lower substrate, a liquid crystal layer sandwiched between the upper and lower substrates, and spacers for maintaining the gap between the upper and lower substrates. The upper substrate includes a first electrode (e.g., a common electrode), a color filter, an upper alignment film, and a black matrix. The lower substrate includes scan lines, data lines, storage capacitors, thin film transistors, a second electrode (e.g., a pixel electrode), and a lower alignment film.

[0003] LCD displays are widely used in mobile phones, personal digital assistants, laptops, and medical surgical endoscopes. In the case of medical surgical endoscopes, the display needs to have uniform image quality, rich colors, and minimal optical differences in visual perception from different lateral angles when the user is using the device. Summary of the Invention

[0004] At least one embodiment of this disclosure provides a display device and a medical endoscope. The display device has a more stable structure by setting a first part of the middle frame to support the display panel, connecting a second part to the first part and extending from the first part to the side away from the cover plate, and setting the second part around the backlight module on the side of the backlight module. This makes the display device more stable, so that when the display device is used as a surgical endoscope display device, it can accurately observe the patient's lesion tissue, thereby improving the accuracy and efficiency of the surgery, and can also reduce the amount of glue used and reduce the risk of deformation of the display device.

[0005] This disclosure provides at least one embodiment of a display device, comprising: a display panel; a cover plate located on the light-emitting side of the display panel; a backlight module disposed on the side of the display panel away from the cover plate; and a mid-frame; wherein the mid-frame comprises: a first portion configured to support the display panel; and a second portion connected to the first portion and extending from the first portion toward the side away from the cover plate; the second portion being disposed around the backlight module on a side of the backlight module; the display device further comprises a first space located between the first portion and the cover plate, a first side of the first space being limited by the cover plate, a second side of the first space being limited by the first portion, the first side of the first space and the second side of the first space being disposed opposite to each other, and the first space being disposed around the display panel; a first adhesive layer is included between the cover plate and the display panel, the orthographic projection of the first adhesive layer on the cover plate covering the orthographic projection of the display area of ​​the display panel on the cover plate.

[0006] For example, in a display device provided in at least one embodiment of this disclosure, a second space is further included between the display panel and the cover plate. A first side of the second space is limited by the cover plate, and a second side of the second space is limited by the display panel. The first side of the second space and the second side of the second space are disposed opposite to each other, and the second space is disposed around the first adhesive layer. The orthographic projection of the peripheral area of ​​the display panel on the cover plate covers the orthographic projection of the second space on the cover plate.

[0007] For example, in a display device provided in at least one embodiment of this disclosure, the second space is disposed around the first adhesive layer, the average thickness of the first adhesive layer is in the range of [0.25mm, 1.00mm], and the thickness of the first adhesive layer is uniform throughout.

[0008] For example, at least one embodiment of the display device provided in this disclosure further includes an outer frame, wherein the outer frame includes a first support portion and a second support portion; the first support portion and the display panel are located on the same side of the cover plate, and the first support portion and a first edge of the cover plate are bonded by a second adhesive; the second support portion and the backlight module are connected to the side away from the display panel; the outer frame further includes a main body portion, the main body portion being respectively connected to the first support portion and the second support portion, the first support portion and the second support portion being respectively connected to the main body portion and located on the same side of the main body portion.

[0009] For example, in a display device provided in at least one embodiment of this disclosure, the middle frame further includes a third portion connected to the first portion and extending from the first portion toward a side away from the cover plate. The third portion is closer to the center of the display device than the second portion and is used to limit the backlight module. There is a gap between the second portion and the third portion.

[0010] For example, in a display device provided in at least one embodiment of this disclosure, the cross-sectional shapes of the first part and the third part form a T-shape on a plane perpendicular to the main surface of the display panel, and the cross-sectional shapes of the first part, the second part and the third part include an F-shaped portion.

[0011] For example, in a display device provided in at least one embodiment of this disclosure, the backlight module further includes a light guide plate and an optical film layer, the optical film layer being disposed on the side of the light guide plate near the cover plate; a first portion being stacked with the optical film layer in a direction perpendicular to the main surface of the cover plate; a third portion being stacked with the light guide plate on the side of the light guide plate near the cover plate and in a direction perpendicular to the main surface of the cover plate; the first portion being disposed adjacent to the optical film layer, and the third portion being disposed adjacent to the light guide plate.

[0012] For example, in a display device provided in at least one embodiment of this disclosure, the backlight module includes a backplate, the backplate including a first sub-backplate and a second sub-backplate connected to each other, the first sub-backplate and the second sub-backplate being disposed adjacent to each other.

[0013] For example, in a display device provided in at least one embodiment of this disclosure, the backlight module further includes a base plate, which is disposed on the side of the second sub-back plate away from the cover plate; the second sub-back plate and the base plate are connected by a first connector, and the second support portion is fixedly connected to the base plate.

[0014] For example, in a display device provided in at least one embodiment of this disclosure, the first sub-backplate is located between the third portion and the light guide plate; the backlight module further includes a backlight source located between the light guide plate and the first sub-backplate.

[0015] For example, in a display device provided in at least one embodiment of this disclosure, a bracket is provided on the side of the second sub-backplate away from the cover plate, and a power board is provided on the side of the bracket away from the second sub-backplate. The bracket is configured to support the power board, and the power board is configured to drive the display panel to display.

[0016] For example, in a display device provided in at least one embodiment of this disclosure, the bracket and the second sub-backplate are connected by a second connector, and the bracket has a first main surface, the second sub-backplate has a second main surface, and the first main surface and the second main surface are in full contact.

[0017] For example, in a display device provided in at least one embodiment of this disclosure, an adapter plate is further included between the bracket and the power board. The adapter plate is fixed on the bracket and carries the power board. The orthographic projection of the power board on the second sub-back panel is located within the orthographic projection of the adapter plate on the second sub-back panel. An electrostatic conduction path is formed between the adapter plate, the bracket, and the second sub-back panel.

[0018] For example, in a display device provided in at least one embodiment of this disclosure, a screw hole is provided on the second main surface of the second sub-backplate, and a hole structure for screws to pass through is provided on the bracket, and the second connector is a combination of the screw and the screw hole.

[0019] For example, in a display device provided in at least one embodiment of this disclosure, the backlight module includes a light guide plate and a second sub-back plate, the second sub-back plate being located on the side of the light guide plate away from the second sub-back plate; the backlight module further includes a heat-conducting component; the heat-conducting component includes a first sub-heat-conducting component extending parallel to the second sub-back plate, the first sub-heat-conducting component being located between the second sub-back plate and the light guide plate; the heat-conducting component further includes a second sub-heat-conducting component extending from the edge of the first sub-heat-conducting component toward the display panel; wherein the first sub-heat-conducting component and the second sub-back plate are attached; a backlight source is disposed on the side of the second sub-heat-conducting component near the light guide plate.

[0020] For example, in a display device provided in at least one embodiment of this disclosure, the heat-conducting component further includes a third sub-heat-conducting component, which is located between the first sub-heat-conducting component and the light guide plate and is respectively in contact with the first sub-heat-conducting component and the light guide plate; the third sub-heat-conducting component is used to provide support for the light guide plate; the heat-conducting component includes a first interval located between the second sub-heat-conducting component and the third sub-heat-conducting component, and at least a portion of the backlight is located in the first interval.

[0021] For example, the display device provided in at least one embodiment of this disclosure further includes a limiting portion fixed to the second sub-backplate, the limiting portion extending toward the display panel; the first sub-heat-conducting component includes a second spacer portion, the limiting portion extending into the second spacer portion for limiting the heat-conducting component.

[0022] For example, in a display device provided in at least one embodiment of this disclosure, the second spacer extends through the first sub-heat-conducting component in the thickness direction of the first sub-heat-conducting component; the heat-conducting component further includes a third spacer extending through the third sub-heat-conducting component in the thickness direction of the third sub-heat-conducting component, and the second spacer and the third spacer are connected to each other; a portion of the limiting portion is located in the second spacer and a portion is located in the third spacer; in at least one direction parallel to the plane of the second sub-back plate, the width of the orthographic projection of the portion of the limiting portion located in the third spacer on the second sub-back plate is greater than the width of the orthographic projection of the second spacer on the second sub-back plate.

[0023] For example, in a display device provided in at least one embodiment of this disclosure, the third direction is the direction from the top side to the ground side of the display device; in the third direction, the width of the second interval is greater than the width of the limiting portion when the limiting portion is located in the second interval.

[0024] For example, in a display device provided in at least one embodiment of this disclosure, the display device further includes a buffer portion located between the first sub-backplate on the top side and the corresponding third sub-heat-conducting component on the top side.

[0025] For example, in a display device provided in at least one embodiment of this disclosure, the backlight module includes a light guide plate and a second sub-back plate, the second sub-back plate being located on the side of the light guide plate away from the second sub-back plate; the backlight source includes a first backlight source and a second backlight source respectively disposed on two opposite sides of the light guide plate; the display device further includes a sensor configured to detect the light output brightness of the backlight module.

[0026] For example, in a display device provided in at least one embodiment of this disclosure, the first backlight and the second backlight are controlled independently, and when one of the first backlight and the second backlight is not working, it can be detected by the sensor; the display device is configured to automatically adjust the brightness of the other of the first backlight and the second backlight so that the display device emits light normally.

[0027] For example, in at least one embodiment of the display device provided in this disclosure, the backlight includes a backlight circuit board and a light-emitting diode light source located on the side of the backlight circuit board near the light guide plate; the display device includes a support column located on the backlight circuit board and abutting against the light guide plate, for limiting the position of the light guide plate.

[0028] For example, in a display device provided in at least one embodiment of this disclosure, the display panel includes a color filter substrate and an array substrate that are aligned with each other, and a liquid crystal layer sandwiched between the color filter substrate and the array substrate; the display panel also includes a +A compensation layer and a +C compensation layer stacked together, wherein the +A compensation layer is closer to the liquid crystal layer than the +C compensation layer; the display panel also includes a first polarizer and a second polarizer, wherein the liquid crystal layer, the +A compensation layer and the +C compensation layer are all located between the first polarizer and the second polarizer.

[0029] For example, in a display device provided in at least one embodiment of this disclosure, the material of the back plate includes aluminum; on the second sub-back plate, a reinforcing rib is provided on the side adjacent to each second sub-back plate, and each reinforcing rib is a long strip extending along the corresponding side of the second sub-back plate, and adjacent reinforcing ribs do not contact each other.

[0030] For example, in a display device provided in at least one embodiment of this disclosure, a second reinforcing structure is provided on the second sub-back plate, the reinforcing ribs are arranged around the second reinforcing structure, and each of the second reinforcing structures has an arc-shaped chamfer in shape on a plane parallel to the main surface of the base plate.

[0031] For example, in a display device provided in at least one embodiment of this disclosure, the first portion includes a first sub-portion and a second sub-portion, the first sub-portion and the second sub-portion being located on different planes; the second sub-portion is closer to the cover plate relative to the first sub-portion; the first sub-portion is configured to support the display panel.

[0032] For example, in a display device provided in at least one embodiment of this disclosure, the size of the display panel is greater than or equal to 27 inches.

[0033] At least one embodiment of this disclosure also provides a medical endoscope device, which includes the display device described in any of the preceding claims. Attached Figure Description

[0034] To more clearly illustrate the technical solutions of the embodiments of this disclosure, the accompanying drawings of the embodiments will be briefly described below. Obviously, the drawings described below only relate to some embodiments of this disclosure and are not intended to limit this disclosure.

[0035] Figure 1 A schematic cross-sectional view of a display device provided in an embodiment of this disclosure;

[0036] Figure 2 A schematic diagram of a planar structure in which a first space is arranged around a display panel, provided for at least one embodiment of this disclosure;

[0037] Figure 3a A schematic cross-sectional view of a second sub-backplate provided in an embodiment of this disclosure;

[0038] Figure 3b A top view of a second sub-backplate provided in an embodiment of this disclosure;

[0039] Figure 3c A left-side view of a first sub-backplate provided in an embodiment of this disclosure;

[0040] Figure 4 A schematic diagram of the planar structure of a backplate provided in an embodiment of this disclosure;

[0041] Figure 5 A backlight module for a display device is provided in one embodiment of this disclosure;

[0042] Figure 6 A schematic cross-sectional view of a backlight module located on the side of a first backlight source, provided in an embodiment of this disclosure;

[0043] Figure 7 A schematic cross-sectional view of a backlight module located on the side of a second backlight source, provided in an embodiment of this disclosure;

[0044] Figure 8 A schematic cross-sectional view of a display device provided in an embodiment of this disclosure;

[0045] Figure 9 A schematic cross-sectional view of a display panel provided in an embodiment of this disclosure; and

[0046] Figure 10 This is a schematic diagram of the planar structure of a medical endoscope provided in one embodiment of the present disclosure. Detailed Implementation

[0047] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this disclosure. All other embodiments obtained by those skilled in the art based on the described embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0048] Unless otherwise defined, the technical or scientific terms used in this disclosure shall have the ordinary meaning understood by one of ordinary skill in the art to which this disclosure pertains. The terms “first,” “second,” and similar terms used in this disclosure do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as “comprising” or “including” mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as “connected” or “linked” are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as “upper,” “lower,” “left,” and “right” are used only to indicate relative positional relationships, and these relative positional relationships may change accordingly when the absolute position of the described objects changes.

[0049] Medical endoscopic monitors, including those used in operating rooms, are essential for surgeons to monitor and cut / suture diseased tissues during endoscopic procedures. To ensure accuracy and efficiency, these monitors require uniform image quality, rich and realistic colors, and timely response. In practice, surgeries are often performed by multiple people, necessitating minimal optical differences in the monitor's viewing angle from different angles. Furthermore, static electricity buildup on the monitor during surgery must prevent blackouts and flickering. Additionally, a glass cover is required for easy surface disinfection without affecting the monitor's internal structure. Given their high usage frequency and aging potential over time, medical endoscopic monitors require a long lifespan.

[0050] The inventors of this disclosure have discovered that in a frame-mounted structure of the display module and cover plate, an air layer exists between the display module and the cover plate. This air layer refracts incident light, resulting in low light transmittance and increased power consumption of the display device. Therefore, a fully laminated method for the display module and cover plate can be considered.

[0051] In typical display device structures, a metal frame is usually used for fixation. A large display with this metal frame is fully bonded to a protective cover. Due to the structural difference between the metal frame and the display panel, a first adhesive is needed to fill the gaps, and a fluid adhesive is injected into the display panel. In a typical design, the distance between the metal frame and the upper polarizer of the display panel is 1.6mm, the total adhesive thickness is 2.7mm, and the amount of fluid adhesive used is 2.45L. The adhesive thickness for the metal frame and the display panel is inconsistent, resulting in a stepped transition zone.

[0052] The inventors of this disclosure have discovered that the internal structure of the display device can be modified by removing the iron frame and altering the structural design of the middle frame to reduce the amount of adhesive used, while avoiding the deformation effect of excessive adhesive on the display panel and preventing light leakage. By setting the first part of the middle frame to support the display panel, connecting the second part to the first part, and extending it from the first part away from the cover plate, and with the second part positioned around the backlight module on its side, the structure of the display device becomes more stable. Furthermore, when this display device is used in the medical field, particularly as a surgical endoscopic display device, it enables accurate observation of the patient's diseased tissue, thereby improving the accuracy and efficiency of surgery.

[0053] At least one embodiment of this disclosure provides a display device, the display device comprising: a display panel; a cover plate located on the light-emitting side of the display panel; a backlight module disposed on the side of the display panel away from the cover plate; and a mid-frame; wherein the mid-frame comprises: a first portion configured to support the display panel; a second portion connected to the first portion and extending from the first portion toward the side away from the cover plate; the second portion being disposed around the backlight module on the side of the backlight module; the display device further comprising a first space located between the first portion and the cover plate, a first side of the first space being limited by the cover plate, a second side of the first space being limited by the first portion, and the first side of the first space and the second side of the first space being disposed opposite to each other.

[0054] For example, in one embodiment, the mid-frame further includes a third portion connected to the first portion and extending from the first portion away from the cover plate. This third portion is closer to the center of the display device than the second portion and serves to limit the backlight module. A gap exists between the second and third portions. By configuring the mid-frame with the first, second, and third portions, the display device achieves a more robust structure and improved reliability. Furthermore, when used in the medical field, this display device can meet high reliability requirements.

[0055] For example, Figure 1 This is a schematic cross-sectional view of a display device according to an embodiment of the present disclosure, as shown below. Figure 1 As shown, the display device 20 includes: a display panel 202; a cover plate 201 located on the light-emitting side of the display panel 202; a backlight module 203 disposed on the side of the display panel 202 away from the cover plate 201; and a middle frame 2031. The middle frame 2031 includes: a first portion 2031a configured to support the display panel 202; a second portion 2031b connected to the first portion 2031a and extending from the first portion 2031a towards the side away from the cover plate 201; the second portion 2031b is disposed around the backlight module 203 on the side of the backlight module 203; the display device 20 also includes a backlight module located on the side of the first... A first space 231 is formed between part 2031a and cover plate 201. The first side 231a of the first space 231 is limited by cover plate 201, and the second side 231b of the first space 231 is limited by the first part 2031a. The first side 231a and the second side 231b of the first space 231 are arranged opposite to each other, and the first space 231 surrounds the display panel 202. A first adhesive layer 205 is included between cover plate 201 and display panel 202. The orthographic projection of the first adhesive layer 205 on cover plate 201 covers the orthographic projection of the display area of ​​display panel 202 on cover plate 201. The structure of the display device 20 is more robust, and it can avoid the deformation of the display panel caused by excessive glue, thus preventing light leakage of the display panel. As a result, when the display device 20 is used in the medical field, especially as a surgical endoscopic display device, it can accurately observe the patient's diseased tissue, thereby improving the accuracy and efficiency of the surgery, and can reduce the amount of glue used and reduce the risk of deformation of the display device.

[0056] It should be noted that the shape of the display panel 202 on the plane where the light-emitting surface is located can be rectangular or rounded rectangle. The first space 231 surrounding the display panel 202 means that the first space 231 is located at least on two sides of the display panel 202. The sides refer to the four sides of the display panel 202 other than the light-emitting surface and the side opposite to the light-incident surface (e.g., the light-incident surface). Preferably, the first space 231 surrounds the display panel 202, meaning that the first space 231 is located on all sides of the display panel 202; for example, the first space 231 forms a closed annular space; for example, the first space 231 is located at all positions except the junctions of different sides.

[0057] For example, Figure 2 This is a schematic diagram of a planar structure in which a first space is arranged around a display panel, as provided in at least one embodiment of the present disclosure. Figure 2 As shown, the first space 231 surrounds the four side surfaces of the display panel 202 to form a closed surrounding space. Figure 2In one variation, the first space 231 may surround only two or three side surfaces of the display panel 202 to form a semi-enclosed area.

[0058] It should be noted that the "side" in Part 2031b, which describes the backlight module 203 surrounding the backlight module 203, refers to the side of the backlight module 203 other than the light-emitting surface and the side opposite to the light-incident surface.

[0059] For example, such as Figure 1 As shown, the backlight module 203 includes a light guide plate 2032 and an optical film layer 2033. The middle frame 2031 includes a first portion 2031a, a second portion 2031b, and a third portion 2031c, which are respectively connected to the first portion 2031a. The first portion 2031a is configured to support the display panel 202. The second portion 2031b extends from the first portion 2031a to the side away from the cover plate 201. The second portion 2031b and the third portion 2031c are located on the same side of the first portion 2031a and have a gap 204 between them. An optical film layer 2033 is disposed on the side of the light guide plate 2032 near the cover plate 201. A first part 2031a is stacked with the optical film layer 2033 in a direction perpendicular to the main surface of the cover plate 201. A third part 2031c is stacked with the light guide plate 2032 on the side of the light guide plate 2032 near the cover plate 201 and in a direction perpendicular to the main surface of the cover plate 201. The third part 2031c is closer to the center of the display device 20 than the second part 2031b, and is used to limit the backlight module 203. The display device 20 has a more robust structure by setting the first part 2031a of the middle frame 2031 to be stacked with the optical film layer 2033 in a direction perpendicular to the main surface of the cover plate 201, and setting the third part 2031c of the middle frame 2031 on the side of the light guide plate 2032 near the cover plate 201 and stacking it with the light guide plate 2032 in a direction perpendicular to the main surface of the cover plate 201. When the display device is used in the medical field, especially as a surgical endoscope display device, it has high reliability.

[0060] For example, such as Figure 1 As shown, the optical film layer 2033 is disposed on the side of the light guide plate 2032 near the cover plate 201; the first part 2031a is stacked with the optical film layer 2033 in a direction perpendicular to the main surface of the cover plate 201; the third part 2031c is stacked with the light guide plate 2032 on the side of the light guide plate 2032 near the cover plate 201 and in a direction perpendicular to the main surface of the cover plate 201; the first part 2031a is disposed adjacent to the optical film layer 2033, and the third part 2031c is disposed adjacent to the light guide plate 2032.

[0061] For example, such as Figure 1 As shown, the display panel 202 and the cover plate 201 also include a second space 232. The first side 232a of the second space 232 is limited by the cover plate 201, and the second side 232b of the second space 232 is limited by the display panel 202. The first side 232a and the second side 232b of the second space 232 are arranged opposite to each other, and the second space 232 is arranged around the first adhesive layer 205. The orthographic projection of the peripheral area of ​​the display panel 202 on the cover plate 201 covers the orthographic projection of the second space 232 on the cover plate 201.

[0062] It should be noted that the second space 232 surrounding the first adhesive layer 205 means that the second space 232 is disposed at least around the cumulative thickness surface of the first adhesive layer 205. Preferably, the second space 232 surrounds the first adhesive layer 205. The definitions of surrounding and encircling correspond to the definitions of the first space 231 surrounding and encircling the display panel 202. The second space 232 surrounding the first adhesive layer 205 can further reduce the amount of adhesive used and reduce the deformation of the display panel caused by the adhesive distribution, thereby avoiding light leakage.

[0063] For example, in one embodiment, the second space 232 surrounds the first adhesive layer 205, the average thickness of which is in the range of [0.25mm, 1.00mm]. Within this range, the adhesive effect of the first adhesive layer is good, and the resulting deformation of the display panel is small. Preferably, the average thickness of the first adhesive layer 205 is 0.50mm. More preferably, the thickness of the first adhesive layer 205 is uniform throughout. It should be noted that uniform thickness of the first adhesive layer may mean that the thickness difference between the thickest and thinnest points of the first adhesive layer 205 is less than or equal to 0.10mm.

[0064] For example, such as Figure 1 As shown, the display panel 202 and the backlight module 203 are connected by a double-sided adhesive buffer pad 220; the buffer pad 220 provides a buffer space for the display panel 202 and the backlight module 203 along a direction perpendicular to the main surface of the display panel 202.

[0065] For example, the cover plate 201 and the first part 2031a can be bonded directly without adhesive. That is, the display panel 202 and the cover plate 201 are bonded only in a small area. There is no need to apply adhesive to a large area of ​​the cover plate 201, which can reduce the amount of adhesive used and reduce the process cost.

[0066] For example, such as Figure 1As shown, the cover plate 201 and the display panel 202 are bonded together by a first adhesive layer 205. The first adhesive layer 205 can be a liquid adhesive or a solid adhesive. The embodiments disclosed herein are not limited to this. A first adhesive layer 205 of appropriate viscosity can be selected according to requirements so that the adhesion between the cover plate 201 and the display panel 202 meets the appropriate requirements.

[0067] It should be noted that the bonding between the cover plate 201 and the display panel 202 via the first adhesive layer 205 refers to the bonding between surfaces. At least 2 / 3 of the area of ​​the main surface of the display panel 202 is bonded to the cover plate 201, which is different from frame bonding, which only bonds the peripheral area between the two bonding structures.

[0068] For example, the cover plate 201 can be a regular glass plate. When the display device 20 is used in an operating room environment, the internal structure of the display device can be protected during the frequent disinfection and wiping process.

[0069] For example, such as Figure 1 As shown, the first part 2031a and the third part 2031c form a T-shape. The third part 2031c extends from the middle region of the first part 2031a to one side of the light guide plate 2032, rather than extending from the edge of the first part 2031a to one side of the light guide plate 2032. Thus, the first part 2031a, the third part 2031c, and the light guide plate 2032 form a partially open receiving space for placing the optical film layer 2033. Furthermore, the direct contact between the third part 2031c and the light guide plate 2032 makes the structure of the entire display device 20 more stable. When the display device 20 is used in an operating room environment, the structural stability requirements are even higher. The embodiments of this disclosure are more adaptable to the harsh application conditions during surgery in an operating room.

[0070] For example, such as Figure 1 As shown, the cross-sectional shapes of the first part 2031a, the second part 2031b, and the third part 2031c include an F-shaped portion. This cross-sectional shape is formed by cutting the main surface of the horizontally placed substrate from top to bottom. The second part 2031b extends from the edge of the first part 2031a to the side away from the first part 2031a. This can confine all structures of the backlight module 203 except for the peripheral frame within the area defined by the middle frame 2031, thereby making the structure of the backlight module 203 more compact and ultimately reducing the size of the display device 20.

[0071] It should be noted that the second part 2031b may not extend from the edge of the first part 2031a away from the first part 2031a. It may also extend from the non-edge of the first part 2031a away from the first part 2031a. That is, the first part 2031a and the second part 2031b form a T-shape. The cross-sectional shape is formed by cutting the main surface of the horizontally placed substrate from top to bottom. In other words, the first part 2031a, the second part 2031b and the third part 2031c may not include the F-shaped part, but can be considered to include the F-shaped part.

[0072] For example, such as Figure 1 As shown, the first part 2031a is disposed adjacent to the optical film layer 2033. In one example, the first part 2031a is in direct contact with the optical film layer 2033, and the third part 2031c is in direct contact with the light guide plate 2032. This structural design can hold the edge of the optical film layer 2033 in the unclosed receiving space formed by the first part 2031a, the third part 2031c and the light guide plate 2032. The surface of the optical film layer 2033 near the display panel 202 abuts against the first part 2031a of the middle frame 2031, and the surface of the optical film layer 2033 away from the display panel 202 abuts against the light guide plate 2032. The surface of the third part 2031c of the middle frame 2031 away from the display panel 202 also abuts against the light guide plate 2032, thereby forming a stable and compact backlight module structure.

[0073] For example, such as Figure 1 As shown, there is a gap between the optical film layer 2033 and the third part 2031c of the middle frame 203, so that the optical film layer 2033 has space to expand when heated.

[0074] For example, the optical film layer 2033 is configured to guide light emitted from the backlight that illuminates the optical film layer 2033 into the display panel 202, thereby providing a backlight for the display panel 202.

[0075] For example, in one example, the optical film 2033 includes a brightness enhancement layer (not shown) and the brightness enhancement layer is configured to increase the brightness of the backlight module 203.

[0076] For example, in another example, the optical film layer 2033 also includes a haze adjustment layer (not shown) disposed on the side of the brightness enhancement layer away from the light guide plate 2032, which is configured to adjust the haze of the backlight module 203, thereby improving the haze of the display device 20.

[0077] For example, such as Figure 1As shown, the backlight module 203 includes a back plate 206, which includes a first sub-back plate 2061 and a second sub-back plate 2062 connected to each other. The first sub-back plate 2061 and the second part 2031b are attached to each other, thereby reinforcing the backlight module 203 on the side to make the structure of the backlight module 203 more stable.

[0078] For example, such as Figure 1 As shown, the outer frame 216 includes a main body 216a, a first support 216b, and a second support 216c. The backlight module 203 also includes a bottom plate 207 disposed on the side of the back plate 206 away from the cover plate 201, and the bottom plate 207 is disposed on the side of the second sub-back plate 2062 away from the cover plate 201. The second sub-back plate 2062 and the bottom plate 207 are connected by a first connector 218, and the second support 216c is fixedly connected to the bottom plate 207, thereby reinforcing the backlight module 203 on the bottom surface. This makes the structure of the backlight module 203 more stable and prevents the final display device 20 from shaking during use, thus affecting the display effect of the display device 20.

[0079] For example, in one instance, there may be no interaction force between the second part 2031b and the base plate 207.

[0080] For example, in one example, the first sub-backplate 2061 (backplate flange) may have an interaction force with the first part 2031a.

[0081] In one specific embodiment, the direction extending from the connection between the first part 2031a and the second part 2031b to the connection between the first part 2031a and the third part 2031c is the first direction A-A', and the direction extending from the second part 2031b is the second direction B-B'. For example, the first direction A-A' and the second direction B-B' intersect. In one example, the first direction A-A' and the second direction B-B' are perpendicular or approximately perpendicular.

[0082] For example, such as Figure 1 As shown, the outer frame 216 includes a main body 216a, a first support 216b, and a second support 216c. The main body 216a is connected to the first support 216b and the second support 216c respectively. The first support 216b and the second support 216c are connected to the main body 216a and located on the same side of the main body 216a. The first support 216b is located on the same side of the cover plate 201 as the display panel 202. The main body 216a extends along the second direction B-B', and the first support 216b and the second support 216c extend from the main body 216a toward one side of the backlight module 203 along the first direction A-A'.

[0083] For example, such as Figure 1 As shown, the first support portion 216b and the first edge of the cover plate 201 are bonded together by the second adhesive 217, and the second support portion 216b is connected to the side of the backlight module 203 away from the display panel 202 to support the cover plate 201. The second adhesive 217 can be a liquid adhesive or a solid adhesive, for example, it can be a double-sided adhesive with a release film, as long as it can ensure that the first support portion 216b and the cover plate 201 are bonded together. The embodiments disclosed herein do not limit this.

[0084] For example, such as Figure 1 As shown, the second support 216c and the base plate 207 are connected by a third connector 223. For example, the third connector 223 can be a combination of a nut and a screw, a riveting structure, or a snap-fit ​​structure combining a stop and a slot. The embodiments disclosed herein do not limit this.

[0085] For example, Figure 8 This is a schematic cross-sectional view of a display device according to an embodiment of the present disclosure. Figure 8 The structure shown is a schematic diagram of the overall structure of the display device, as follows: Figure 8 As shown, the protective cover 101 and the display panel 104 are integrated into a single unit. Both sides of the backlight module 106 have outer frames 216. Each outer frame 216 includes a main body 216a, a first support portion 216b, and a second support portion 216c. The first support portion 216b is located on the same side of the cover 201 as the display panel 202, and the first support portion 216b and the first edge of the cover 201 are bonded to each other on both sides using a second adhesive 217 to support the cover 201. The second support portion 216c is connected to the base plate 207 via a third connector 223. The outer frame 216 reinforces the cover 101, the display panel 104, and the backlight module 106 as a whole, enhancing the reliability of the display device.

[0086] For example, in one example, the base plate is Z-shaped. The outer frame 216, as the appearance component of the whole machine, needs to be thicker than the display module in the Z direction, including components such as the whole machine system board. Therefore, a Z-shaped structure is used to compensate for the size difference.

[0087] It should be noted that, since the thickness of the adhesive layer is in the range of [0.25mm, 1.00mm], when the size of the display panel 202 (diagonal length of the display area) is 27 inches or larger, the adhesive 205 between the cover plate 201 and the display panel 202 may not be sufficient to support the weight of the backlight module 203. In this case, the outer frame 216 is used for auxiliary support to ensure the reliability of the display device.

[0088] It should be noted that the first connector 208 can be a combination of a nut and a screw, a riveting structure, or a snap-fit ​​structure combining a stop and a slot. The embodiments disclosed herein do not limit this.

[0089] For example, such as Figure 1 As shown, the first sub-backplate 2061 is located between the third part 2031c and the light guide plate 2032. The backlight module 203 also includes a backlight source, which is located between the light guide plate 2032 and the first sub-backplate 2061.

[0090] It should also be noted that, Figure 1 The surface of the second sub-backplate 2062 near the display panel 202 is not shown, but the circuit structure on the second sub-backplate 2062 is described below. Figures 3a-3c The circuit structure on the second sub-backplane 2062 is described in detail. This circuit structure can be located in... Figure 1 In the structure of the second sub-backplate 2062 shown as a part, it can also be located in Figure 1 The structure of the second sub-backplate 2062, which is not shown.

[0091] For example, Figure 3a This is a schematic cross-sectional view of a second sub-backplate according to an embodiment of the present disclosure. Figure 3b This is a top view of a second sub-backplate according to an embodiment of the present disclosure, combined with... Figure 1 and Figure 3a , Figure 3b As shown, a bracket 209 is provided on the side of the second sub-back panel 2062 near the cover plate 201, and a power board 210 is provided on the side of the bracket 209 away from the second sub-back panel 2062. The bracket 209 is configured to support the power board 210, and the power board 210 is configured to drive the display panel 202 to display. That is, the power board 210 can provide the display panel 202 with a drive signal to display.

[0092] For example, such as Figure 3a As shown, the bracket 209 and the second sub-backplate 2062 are connected by a second connector 211, which is a combination of screws and screw holes. The bracket 209 has a first main surface 2091, and the second sub-backplate 2062 has a second main surface 2062a. The first main surface 2091 and the second main surface 2062a are in full-surface contact. For example, in Figure 3a In this case, the first main surface 2091 and the second main surface 2062a are in full contact, that is, the first main surface 2091 of the bracket 209 is completely attached to the second main surface 2062a of the second sub-back plate 2062, rather than partially attached.

[0093] For example, such as Figure 3aAs shown, an adapter plate 237 is also included between the bracket 209 and the power board 210. The adapter plate 237 is fixed to the bracket 209 and supports the power board 210. The orthographic projection of the power board 210 on the second sub-backplate 2062 is located within the orthographic projection of the adapter plate 237 on the second sub-backplate 2062. The adapter plate 237, the bracket 209, and the second sub-backplate 2062 form an electrostatic conduction path. The electrostatic conduction path allows the electricity on the power board to be conducted to the ground through the backplate, preventing interference with the display screen.

[0094] For example, in Figure 3a In the middle, the power board 210 and the adapter board 237 are fixedly connected by a combination of screws and screw holes. The adapter board 237 and the bracket 209 are also fixedly connected by a combination of screws and screw holes.

[0095] For example, Figure 3b This is a schematic diagram of the planar structure when the main surface of the second sub-backplate is parallel to the horizontal plane, as shown below. Figure 3b As shown, the bracket 209 is elongated, and the orthographic projection of the power board 210 on the second sub-backplate 2062 is located within the orthographic projection of the adapter plate 237 on the second sub-backplate 2062.

[0096] For example, Figure 3c A left-side view of a first sub-backplate provided in an embodiment of this disclosure, as shown below. Figure 3c As shown, a power board 210 is provided on the side of the bracket 209 away from the first sub-backplate 2061. The bracket 209 is configured to support the power board 210, and the power board 210 is configured to drive the display panel 202 to display. That is, the power board 210 can provide the display panel 202 with the drive signal to display. The first main surface 2061a of the first sub-backplate 2061 includes a recess 2061b near the main surface of the bracket 209. A screw hole for screw fixing is provided in the recess 2061b, and a hole structure for screws to pass through is provided on the bracket 209. The combination of screws and screw holes facilitates the disassembly and assembly of the display device.

[0097] For example, such as Figure 3c As shown, the surface of the screw hole is not on the same surface as the surface of the first sub-back plate 2062 near the cover plate 201, so that the surface of the bracket 209 can fit with the surface of the first sub-back plate 2061. That is, the first main surface 2091 of the bracket 209 and the second main surface 2092 of the first sub-back plate 2061 can be surface-fitted, thereby increasing the contact area between the bracket 209 and the first sub-back plate 2061. Moreover, the materials of the bracket 209 and the first sub-back plate 2061 are both conductive metal materials, which allows the static electricity generated by the power board 210 to be released quickly.

[0098] It should be noted that the connection method between the first sub-back plate 2061 and the bracket 209 is not limited to the combination of screws and screw holes described above. The first sub-back plate 2061 and the bracket 209 can also be connected by riveting. For specific settings, please refer to conventional riveting structures. The embodiments disclosed herein do not limit this.

[0099] It should also be noted that the surface of a typical backlight module is made of galvanized steel sheet, which has a very low surface smoothness and relatively poor conductivity. Furthermore, in typical backlight modules, the bracket and backplate are connected only by screws and screw holes, resulting in noticeable gaps. That is, the bracket and backplate are not surface-to-surface fitted, and the contact area between them is small, which is detrimental to the discharge of static electricity from the power board on the bracket. In the embodiments of this disclosure, for example, aluminum is used to form the backplate. Aluminum has good conductivity, facilitating the discharge of static electricity, and the bracket and backplate are connected using a planar, full-surface contact method, resulting in a large contact area and a more stable structure.

[0100] For example, in one example, the material of the backplate 206 includes aluminum, for example, Figure 4 This is a schematic diagram of the planar structure of a backplate according to an embodiment of the present disclosure, as shown below. Figure 4 As shown, taking the planar structure of the first sub-backplate 2062 included in the backplate 206 as an example, a reinforcing rib is provided on the side adjacent to each second sub-backplate 2062 on the second sub-backplate 2062. A reinforcing rib 214a is provided around the second sub-backplate 2062. The shape of each reinforcing rib 214a is a long strip extending along the corresponding side of the second sub-backplate 2062, and adjacent reinforcing ribs 214a do not contact each other. The reinforcing rib can improve the deformation resistance of the display device 20, and make the structure of the entire display device 20 more stable, so that the display device can better adapt to the harsh application conditions during surgery in the operating room.

[0101] For example, such as Figure 4 As shown, each side of the second sub-back plate 2062 is provided with the reinforcing rib. Each reinforcing rib has a long strip shape in planar shape, and the adjacent reinforcing ribs are disconnected to improve the strength of the back plate.

[0102] For example, such as Figure 4 As shown, a second reinforcing structure 214b is provided on the second sub-back plate 2062, and reinforcing ribs 214a are provided around the second reinforcing structure 214b. Each second reinforcing structure 214b has an arc-shaped chamfer on a plane parallel to the main surface of the base plate 207.

[0103] For example, the size of the display panel is greater than or equal to 27 inches, where 27 inches means that the diagonal length of the display area of ​​the display panel is 27 inches.

[0104] It should be noted that the first sub-backplate 2061 included in the backplate 206 also has a similar reinforcing structure as the second sub-backplate 2062 described above. For details, please refer to the relevant descriptions above, which will not be repeated here.

[0105] For example, such as Figure 1 , Figure 6 , Figure 7 As shown, the backlight module 203 further includes a heat-conducting component 212, which includes a first sub-heat-conducting component 212a extending parallel to the second sub-backplate 2062 and located between the second sub-backplate 2062 and the light guide plate 2032; the heat-conducting component 212 also includes a second sub-heat-conducting component 212b extending from the edge of the first sub-heat-conducting component 212a toward the display panel 202; wherein the first sub-heat-conducting component 212a and the second sub-backplate 2062 are attached; a backlight is provided on the side of the second sub-heat-conducting component 212b near the light guide plate 2032.

[0106] For example, such as Figure 1 , Figure 6 , Figure 7 As shown, the heat-conducting component 212 also includes a third sub-heat-conducting component 212c. The third sub-heat-conducting component 212c is located between the first sub-heat-conducting component 212a and the light guide plate 2032 and is in contact with the first sub-heat-conducting component 212a and the light guide plate 2032 respectively. The third sub-heat-conducting component 212c can be used to provide support for the light guide plate 2032.

[0107] Preferably, the first sub-heat-conducting component 212a, the second sub-heat-conducting component 212b, and the third sub-heat-conducting component 212c are an integral structure.

[0108] For example, the material of the thermally conductive component 212 may include thermally conductive metal, graphene, or thermally conductive silicone grease, etc., and the embodiments disclosed herein are not limited thereto. Preferably, the material of the thermally conductive component 212 includes aluminum.

[0109] For example, the heat-conducting component 212 includes a first spacer 212d located between the second sub-heat-conducting component 212b and the third sub-heat-conducting component 212c, and at least a portion of the backlight 213 is located in the first spacer 212d.

[0110] For example, the surface of the third sub-heat-conducting component 212c away from the base plate 207 is in direct contact with the surface of the light guide plate 2032 near the base plate 207, that is, the third sub-heat-conducting component 212c has a supporting effect on the light guide plate 2032. This structural design can make the structure of the display device 20 more stable.

[0111] For example, a backlight 213 is provided on the side of the second sub-heat-conducting component 212b near the light guide plate 2032. The light emitted by the backlight 213 illuminates the light guide plate 2032, and then is conducted to the display panel 202 through the optical film layer 2033 located on the side of the light guide plate 2032 near the display panel 202, thereby providing backlight for the display panel 202. Specifically, the first spacing portion 212d acts as a reinforcing rib, which can increase the overall structural strength of the heat-conducting component 212. Specifically, the circuit board of the backlight 213 is located in the first spacing portion 212d; the first spacing portion 212d provides a space for accommodating the circuit board of the backlight 213. Preferably, the backlight 213 is fixed to the second sub-heat-conducting component 212b by a heat-dissipating adhesive strip.

[0112] For example, such as Figure 6 As shown, the display panel 202 also includes a limiting part 253 fixed to the second sub-back plate 2062. The limiting part 253 extends toward the display panel 202. The first sub-heat-conducting component 212a includes a second spacer 212e. The limiting part 253 extends into the second spacer 212e to limit the heat-conducting component 212.

[0113] For example, such as Figure 6 As shown, the second spacer 212e penetrates the first sub-heat-conducting component 212a in the thickness direction. The heat-conducting component 212 also includes a third spacer 212f that penetrates the third sub-heat-conducting component 212c in the thickness direction. The second spacer 212e and the third spacer 212f are connected to each other. A portion of the limiting portion 253 is located in the second spacer 212e and a portion is located in the third spacer 212f.

[0114] For example, in at least one direction parallel to the plane where the second sub-back plate 2062 is located, the width of the portion of the limiting portion 253 located on the third interval portion 212f on the second sub-back plate 2062 is greater than the width of the second interval portion 212e on the second sub-back plate 2062, so as to limit the heat-conducting member 212 in the extending direction perpendicular to the second sub-back plate 2062.

[0115] For example, in at least one direction parallel to the plane of the second sub-back plate 2062, the width of the second spacer 212e is greater than the width of the limiting portion 253 within the second spacer 212e. It is understood that when the width of the second spacer 212e is greater than the width of the limiting portion 253 within the second spacer 212e, assembly space can be provided for the limiting portion 253.

[0116] For example, the second spacing portion 212e extends along one side of the display panel 202 and penetrates the heat-conducting component 212, dividing the heat-conducting component 212 into two independent parts. When the light guide plate 2032 expands due to heat, it can push one of the independent parts of the heat-conducting component 212 to move (for example, by pushing the backlight source disposed between the light guide plate 2032 and the third sub-heat-conducting component 212c to indirectly push one of the independent parts of the heat-conducting component 212 to move), thereby changing the width of the second spacing portion 212e. In this way, the light guide plate 2032 is always in a state of no movement in the direction in which the heat-conducting component 212 is pushed to move, which enhances the stability of the backlight module 203 and improves the reliability of the display device. Furthermore, in the field of medical displays, especially for surgical endoscopic display devices, high backlight brightness is often required, resulting in a large thermal expansion of the light guide plate. The above design can overcome the reliability problem caused by the large thermal expansion of the light guide plate.

[0117] Preferably, the display device includes a buffer portion 255 located between a separate portion of the heat-conducting component 212 and the corresponding first sub-backplate 2061. The buffer portion serves to limit the movement of the separate portion of the heat-conducting component 212 on that side, and its filling position also acts as an expansion space. When the light guide plate 2032 expands, it can compress the buffer portion 255 of the separate portion of the heat-conducting component 212 on that side. This design improves the reliability of the display device.

[0118] Preferably, such as Figure 1 As shown, the third direction is the direction from the top side to the ground side of the display device. In the third direction, the width of the orthographic projection of the portion of the limiting part 253 located in the third interval 212f on the second sub-backplate 2062 is greater than the width of the orthographic projection of the second interval 212e on the second sub-backplate 2062. Preferably, in the third direction, the width of the second interval 212e is greater than the width of the limiting part 253 located in the second interval 212e.

[0119] Specifically, the "sky side" of a display device can be understood as the upper side of the displayed image when the display device is in normal operation; the "ground side" of a display device can be understood as the lower side of the displayed image when the display device is in normal operation. Furthermore, the "sky side" of a display device can also be understood as the side of the display device facing the sky when it is suspended in use; the "ground side" can also be understood as the side of the display device facing the ground when it is suspended in use.

[0120] For example, such as Figure 6As shown, the second spacing portion 212e extends along a direction parallel to the top side of the display device and penetrates the heat-conducting member 212, dividing the heat-conducting member 212 into two independent parts with variable relative positions, one near the top side and the other near the ground side. For example, the display device includes a buffer portion located between the first sub-backplate 2061 on the top side and the corresponding third sub-heat-conducting member 212c on the top side, used to limit the heat-conducting member 212 on the top side, while the filling position of the buffer portion serves as an expansion space. When the light guide plate 2032 expands, it can push the heat-conducting member 212 on the top side to compress the buffer portion. This design can improve the reliability of the display device. Specifically, the material of the buffer portion is an elastic material, such as rubber.

[0121] Preferably, the distance between the second interval 212e and the sky side is less than the distance between the second interval 212e and the ground side, so as to avoid the light guide plate 2032 from wrinkling due to thermal expansion, which would affect the display effect.

[0122] Priority, such as Figure 7 The second sub-heat-conducting component 212b corresponding to the ground side is fixed to the first sub-backplate 2061 by the third adhesive 251a.

[0123] For example, such as Figure 1 As shown, the backlight module 203 includes a light guide plate 2032 and a second sub-backplate 2062, the second sub-backplate 2062 being located on the side of the light guide plate 2032 away from the second sub-backplate 2062; the backlight source 213 includes a first backlight source 2131 and a second backlight source 2132 respectively disposed on two opposite sides of the light guide plate 2032. The display device also includes a sensor configured to detect the light output brightness of the backlight module 203.

[0124] For example, Figure 5 This is a schematic diagram of a planar structure of a backlight provided in an embodiment of the present disclosure, as shown below. Figure 5 As shown, the backlight 213 includes a first backlight 2131 and a second backlight 2132 respectively disposed on two opposite sides of the light guide plate 2032. (Combined) Figure 1 and Figure 5 The first backlight 2131 is located on the side of the light guide plate 2032 in the figure, although Figure 1 Not shown in the diagram, the second backlight 2132 is located on the side of the light guide plate 2032 on the other side.

[0125] For example, such as Figure 5 As shown, the second sub-backplate 2062 has a through hole 254 at its center. The sensor 215 is located on the side of the second sub-backplate 2062 away from the light guide plate 2032. The light emitted by the light guide plate 2032 can enter the sensor 215 through the hole, thereby monitoring the brightness of the light guide plate 2032.

[0126] For example, such as Figure 6 As shown, the first backlight 2131 includes a first backlight circuit board 2131a and a first light source 2131b. The first backlight circuit board 2131a is attached to the side of the third sub-heat-conducting component 212c near the light guide plate 2032, and the first backlight 2131b is disposed on the side of the first backlight circuit board 2131a away from the third sub-heat-conducting component 212c. The light emitted by the first backlight 2131b enters the light guide plate 2032 and exits from the light-emitting surface of the light guide plate 2032.

[0127] For example, the backlight 213 includes a backlight circuit board and a light-emitting diode light source located on the side of the backlight circuit board near the light guide plate. The display device includes a support post 214a, which is located on the backlight circuit board and abuts against the light guide plate 2032 to limit the position of the light guide plate 2032.

[0128] In one specific embodiment, a support post 214a is provided between the first backlight circuit board 2131a and the light guide plate 2032. The support post 214a is configured to create a gap between the first light source 2131b and the light guide plate 2032. This gap can accelerate heat dissipation, thereby keeping the temperature of the backlight module 203 within a suitable range. When the light guide plate 2032 expands at high temperatures, this gap can also ensure its existence, preventing damage from compression between the light guide plate 2032 and the first light source 2011b, thus maintaining stable optical uniformity of the display device 20. In some embodiments, the support post 214a can also be fixed to a third sub-heat-conducting component 212c and positioned towards the light guide plate 2032.

[0129] For example, such as Figure 7 As shown, the second backlight 2132 includes a second backlight circuit board 2132a and a second light source 2132b. The second backlight circuit board 2132a is attached to the side of the third sub-heat-conducting component 212c near the light guide plate 2032, and the second light source 2131b is disposed on the side of the second backlight circuit board 2132a away from the third sub-heat-conducting component 212c. Light emitted from the second backlight 2132b enters the light guide plate 2032 and exits from the light-emitting surface of the light guide plate 2032.

[0130] In some embodiments, a support post is provided between the second backlight circuit board 2132a and the light guide plate 2032. This support post is configured to create a gap between the second light source 2132b and the light guide plate 2032. This gap accelerates heat dissipation, allowing the temperature of the backlight module 203 to be controlled within a suitable range. When the light guide plate 2032 expands at high temperatures, this gap also ensures its existence, preventing damage from compression between the light guide plate 2032 and the second light source 2012b, thereby maintaining stable optical uniformity of the display device 20. In some embodiments, the support post can also be fixed to a third sub-heat-conducting component 212c and oriented towards the light guide plate 2032. The materials of the support posts corresponding to the first backlight 2131 and the second backlight 2132 can be the same.

[0131] For example, Figure 5 A backlight module for a display device provided in one embodiment of this disclosure, such as Figure 5 As shown, the display device also includes a sensor 215 configured to detect the light output brightness of the backlight module. Specifically, the sensor 215 is located on the side of the second sub-backplate 2062 away from the light guide plate 2032. The light guide plate 2032 includes a through hole, through which light from the light guide plate 2032 can enter the sensor 215 to detect the light output intensity of the multiple backlight modules. Preferably, the through hole is located at the center of the second sub-backplate 2062.

[0132] For example, combining Figure 5 The first backlight 2131 and the second backlight 2132 are arranged opposite to each other. For example, Figure 6 This is a schematic cross-sectional view of a backlight module located on the side of the first backlight source, according to an embodiment of this disclosure. Figure 7 This is a schematic cross-sectional view of a backlight module located on the side of the second backlight source, provided in an embodiment of this disclosure. Figure 6 and Figure 7 The second light source 2132b and the first light source 2131b are arranged opposite to each other.

[0133] Specifically, the second light source 2132b and the first light source 2131b are located on opposite sides of the light guide plate 2032. For example, the second spacing portion 212e extends through the first sub-heat-conducting component 212c along the extension direction of the first backlight 2131, dividing the heat-conducting component 212 into two independent parts with variable relative positions. When the light guide plate 2032 expands due to heat, since the light guide plate 2032 abuts against the support column 214a, the light guide plate 2032 can push one of the independent parts of the heat-conducting component 212 to move through the support column 214a on one side, so that the light guide plate 2032 is always in a state of no movement in the direction that pushes one of the independent parts of the heat-conducting component 212 to move, thereby improving the reliability of the display device. Furthermore, in the field of medical displays, especially for surgical endoscopic display devices, high backlight brightness is often required, resulting in a large thermal expansion of the light guide plate. The above design can overcome the reliability problem caused by the large thermal expansion of the light guide plate.

[0134] For example, the first backlight 2131 and the second backlight 2132 are respectively disposed on the top side and the ground side of the display device; specifically, the top side and the ground side may each include a first gap 212d, which is used to accommodate at least a portion of the first backlight 213 and at least a portion of the second backlight 2132.

[0135] For medical display devices, especially those used in medical endoscopes, ensuring the brightness of the display device is crucial. Utilizing sensors to detect the light output brightness of the backlight module and enabling the display device to make timely adjustments to ensure sufficient brightness can improve the reliability of the display device.

[0136] For example, if the backlight intensity decreases during use, the display device can determine whether the light intensity of the backlight needs to be enhanced and to what extent, based on the light intensity signal intensity obtained by the sensor 215.

[0137] For example, the way to change the light intensity of a backlight can be by modulating the duty cycle of the light-emitting pulses of the backlight's light-emitting chip.

[0138] For example, in one example, the backlight includes two independently controllable backlights. When one of the two backlights is not working, the light intensity fed back to the sensor decreases significantly, which can be detected by the sensor. The display device is configured to automatically adjust the brightness of the other of the two backlights so that the display device 20 emits light at a preset brightness (e.g., the operating brightness when both light sources are emitting light normally).

[0139] Preferably, the first backlight 2131 and the second backlight 2132 are located on opposite sides of the display device, such as the top side and the bottom side.

[0140] In one specific embodiment, such as Figure 6 and Figure 7 As shown, the first backlight 2131 and the second backlight 2132 can be controlled independently. When one of the first backlight 2131 and the second backlight 2132 is not working, it can be detected by a sensor. Because the light intensity fed back to the sensor decreases significantly, it can be detected by the sensor. The display device is configured to automatically adjust the brightness of the other of the first backlight 2131 and the second backlight 2132 so that the light emitted by the display device 20 can reach a preset brightness (e.g., the operating brightness when both light sources are emitting light normally).

[0141] For example, such as Figure 6 and Figure 7 As shown, the first part 2031a includes a first sub-part 2031a1 and a second sub-part 2031a2, which are located on different planes. The second sub-part 2031a2 is closer to the cover plate 201 than the first sub-part 2031a1. The first sub-part 2031a1 is configured to support the display panel 202. This first sub-part 2031a1 supporting the display panel 202 can save space and reduce the overall thickness of the display device 20.

[0142] For example, the plane containing the first sub-part 2031a1 and the plane containing the second sub-part 2031a2 are parallel to each other.

[0143] For example, a third sub-part 2031a3 is also included between the first sub-part 2031a1 and the second sub-part 2031a2, and the third sub-part 2031a3 is connected to the first sub-part 2031a1 and the second sub-part 2031a2 respectively.

[0144] For example, the cross-sectional shape of the whole formed by the first sub-part 2031a1, the third sub-part 2031a3, and the second sub-part 2031a2 is a polygonal shape.

[0145] For example, in one embodiment, the projections of the first sub-part 2031a1 and the second sub-part 2031a2 onto the plane containing the light-emitting surface of the display panel 202 may not overlap.

[0146] For example, in one embodiment, the third portion 2031c is connected to the third sub-portion 2031a3.

[0147] Preferably, the design of the display device needs to consider that when one side of the backlight is not working, the other side of the backlight needs to independently support the operation of the display device, and the brightness increases significantly. Therefore, the display device needs to include a heat-conducting component 212 that works in conjunction with the two side light sources to prevent heat accumulation when only one side of the light source is working.

[0148] For example, Figure 9 This is a schematic cross-sectional view of a display panel according to an embodiment of the present disclosure, as shown below. Figure 9 As shown, the display panel 202 includes a color filter substrate 2021 and an array substrate 2022 that are aligned with each other, and a liquid crystal layer 2023 sandwiched between the color filter substrate 2021 and the array substrate 2022, i.e., the color filter substrate 2021 and the array substrate 2022 face each other and are separated. The display panel 202 also includes a +A compensation layer and a +C compensation layer stacked together, with the +A compensation layer being closer to the liquid crystal layer 2023 than the +C compensation layer. The display panel 202 also includes a first polarizer and a second polarizer, with the liquid crystal layer, the +A compensation layer, and the +C compensation layer all located between the first polarizer and the second polarizer. The first polarizer 2024 is disposed on the side of the color filter substrate 2021 away from the array substrate 2022. The first polarizer 2024 includes a first compensation layer 2025 and a second compensation layer 2026 stacked together, with the first compensation layer 2025 being further away from the liquid crystal layer 2023 than the second compensation layer 2026. The first compensation layer 2025 and the second compensation layer 2026 jointly compensate for the phase delay of light. Under their combined effect, the dark light leakage of the display panel can be significantly reduced, and the large viewing angle color deviation can be significantly improved, thereby improving the display effect of the display device; meeting the display requirements of the display device for use in the medical field, especially medical endoscopes.

[0149] For example, multiple gate lines and multiple data lines are formed on the inner surface of the array substrate 2022. These gate lines and data lines intersect each other to define pixel regions, and thin-film transistors (TFTs) are connected to both the gate lines and data lines. A transparent pixel electrode in each pixel region is electrically connected to the source or drain of the TFT. Additionally, a black matrix covering the gate lines, data lines, and TFTs is formed on the inner surface of the color filter substrate 2021, and a color filter layer including red, green, and blue color filters is formed on the black matrix; for example, a transparent common electrode is formed on the color filter layer.

[0150] For example, such as Figure 9 As shown, a sealing pattern 2027 is formed in the edge portion between the color filter substrate 2021 and the array substrate 2022. This sealing pattern 2027 is, for example, a sealant pattern to prevent leakage of the liquid crystal layer. For example, the sealing pattern 2027 is not limited to thermosetting sealant or UV-curable sealant. A receiving space is formed between the sealing pattern 2027, the color filter substrate 2021, and the array substrate 2022, and the liquid crystal layer 2023 is disposed in this receiving space.

[0151] For example, in one example, the first compensation layer 2025 is a cholesteric liquid crystal layer, and the second compensation layer 2026 is a base film formed of a cyclic olefin polymer.

[0152] At least one embodiment of this disclosure also provides a medical endoscope. Figure 10 This is a schematic diagram of the planar structure of a medical endoscope provided in one embodiment of the present disclosure, as shown below. Figure 10 As shown, the medical endoscope 30 includes the display device 20 in any of the above embodiments.

[0153] The medical endoscope device provided in the embodiments of this disclosure has the same technical features and working principle as the display device described above, and will not be described again in the embodiments of this disclosure.

[0154] The display device and medical endoscope provided in at least one embodiment of this disclosure have at least one of the following beneficial technical effects:

[0155] (1) The display device provided in at least one embodiment of this disclosure removes the iron frame and changes the structural design of the middle frame, thereby reducing the amount of glue used, avoiding pulling on the display panel, and thus avoiding problems such as yellow spots, glue leakage, light leakage, poor antistatic ability and low light transmittance.

[0156] (2) The display device provided in at least one embodiment of the present disclosure, by setting the first part of the middle frame to be stacked with the optical film layer in a direction perpendicular to the main surface of the cover plate, and setting the third part of the middle frame to be stacked with the light guide plate on the side of the light guide plate near the cover plate in a direction perpendicular to the main surface of the cover plate, makes the structure of the display device more stable, thereby enabling the display device to accurately observe the patient's lesion tissue when used as a surgical endoscope display device, so as to improve the accuracy and efficiency of the surgery.

[0157] The following points need to be explained:

[0158] (1) The accompanying drawings of the embodiments of this disclosure only involve the structures involved in the embodiments of this disclosure. Other structures can be referred to the general design.

[0159] (2) For clarity, the thickness of layers or regions in the drawings used to describe embodiments of the present disclosure is enlarged or reduced, i.e., these drawings are not drawn to actual scale.

[0160] (3) Where there is no conflict, the embodiments of this disclosure and the features in the embodiments can be combined with each other to obtain new embodiments.

[0161] The above description is merely a specific embodiment of this disclosure, but the scope of protection of this disclosure is not limited thereto. The scope of protection of this disclosure should be determined by the scope of protection of the claims.

Claims

1. A display device, comprising: Display panel; The cover plate located on the light-emitting side of the display panel; A backlight module is disposed on the side of the display panel away from the cover plate; Mid-frame; where, The middle frame includes: The first part is configured to support the display panel; The second part is connected to the first part and extends from the first part to the side away from the cover plate; the second part is disposed around the backlight module on the side of the backlight module; The display device further includes a first space located between the first portion and the cover plate, a first side of the first space being limited by the cover plate, a second side of the first space being limited by the first portion, the first side of the first space and the second side of the first space being disposed opposite to each other, and the first space being disposed around the display panel; A first adhesive layer is included between the cover plate and the display panel, and the orthographic projection of the first adhesive layer on the cover plate covers the orthographic projection of the display area of ​​the display panel on the cover plate. The mid-frame also includes a third part connected to the first part and extending from the first part toward the side away from the cover plate. The third part is closer to the center of the display device than the second part and is used to limit the backlight module. There is a gap between the second part and the third part.

2. The display device according to claim 1, wherein, The display panel and the cover plate further include a second space, a first side of which is limited by the cover plate and a second side of which is limited by the display panel. The first side and the second side of the second space are arranged opposite to each other, and the second space is arranged around the first adhesive layer. The orthographic projection of the peripheral area of ​​the display panel on the cover plate covers the orthographic projection of the second space on the cover plate.

3. A display device according to claim 2, wherein, The second space is disposed around the first adhesive layer, the average thickness of the first adhesive layer is in the range of [0.25mm, 1.00mm]; the thickness of the first adhesive layer is uniform throughout.

4. The display device according to claim 1, further comprising an outer frame, wherein, The outer frame includes a first support portion and a second support portion; The first support portion and the display panel are located on the same side of the cover plate, and the first support portion and the first edge of the cover plate are bonded together by a second adhesive; the second support portion and the backlight module are connected to the side away from the display panel. The outer frame also includes a main body, which is connected to a first support and a second support respectively. The first support and the second support are connected to the main body and located on the same side of the main body.

5. The display device according to claim 1, wherein, The cover plate is directly bonded to the first part without adhesive.

6. The display device according to claim 1, wherein, On a plane perpendicular to the main surface of the display panel, the cross-sectional shapes of the first part and the third part form a T-shape, and the cross-sectional shapes of the first part, the second part and the third part include an F-shaped portion.

7. The display device according to claim 1, wherein, The backlight module also includes a light guide plate and an optical film layer, wherein the optical film layer is disposed on the side of the light guide plate near the cover plate; The first portion is stacked with the optical film layer in a direction perpendicular to the main surface of the cover plate; the third portion is stacked with the light guide plate on the side of the light guide plate near the cover plate and in a direction perpendicular to the main surface of the cover plate. The first part is disposed adjacent to the optical film layer, and the third part is disposed adjacent to the light guide plate.

8. The display device according to any one of claims 1 to 7, wherein, The backlight module includes a backplate, which includes a first sub-backplate and a second sub-backplate connected to each other, with the first sub-backplate and the second sub-backplate being disposed adjacent to each other.

9. The display device according to claim 8, wherein, The backlight module also includes a base plate, which is disposed on the side of the second sub-back plate away from the cover plate; The display device further includes an outer frame, which includes a first support portion and a second support portion. The first support portion and the display panel are located on the same side of the cover plate, and the first support portion and a first edge of the cover plate are bonded together by a second adhesive. The second support portion is connected to the side of the backlight module away from the display panel. The second sub-back plate and the base plate are connected by the first connector, and the second support part is fixedly connected to the base plate.

10. The display device according to claim 8, wherein, The first sub-backplate is located between the third portion and the light guide plate; The backlight module also includes a backlight source, which is located between the light guide plate and the first sub-back plate.

11. The display device according to claim 8, wherein, A bracket is provided on the side of the second sub-back panel away from the cover plate, and a power board is provided on the side of the bracket away from the second sub-back panel. The bracket is configured to support the power board, and the power board is configured to drive the display panel to display.

12. The display device according to claim 11, wherein, The bracket and the second sub-backplate are connected by a second connector, and the bracket has a first main surface, the second sub-backplate has a second main surface, and the first main surface and the second main surface are in full contact.

13. The display device according to claim 12, wherein, The bracket and the power board are further provided with an adapter plate, which is fixed to the bracket and supports the power board; the orthographic projection of the power board on the second sub-back panel is located within the orthographic projection of the adapter plate on the second sub-back panel. The adapter plate, the bracket, and the second sub-back plate form an electrostatic conduction path.

14. The display device according to claim 12 or 13, wherein, The second main surface of the second sub-back plate is provided with screw holes, and the bracket is provided with a hole structure for screws to pass through. The second connector is a combination of the screw and the screw holes.

15. The display device according to any one of claims 1 to 7, wherein, The backlight module includes a light guide plate and a second sub-back plate, the second sub-back plate being located on the side of the light guide plate away from the second sub-back plate; The backlight module also includes heat-conducting components; The heat-conducting component includes a first sub-heat-conducting component extending parallel to the second sub-backplate, and the first sub-heat-conducting component is located between the second sub-backplate and the light guide plate; The heat-conducting component further includes a second sub-heat-conducting component extending from the edge of the first sub-heat-conducting component toward the display panel; in, The first sub-heat-conducting component and the second sub-back plate are attached together; A backlight is provided on the side of the second sub-heat-conducting component near the light guide plate.

16. The display device according to claim 15, wherein, The heat-conducting component further includes a third sub-heat-conducting component, which is located between the first sub-heat-conducting component and the light guide plate and is respectively in contact with the first sub-heat-conducting component and the light guide plate; the third sub-heat-conducting component is used to provide support for the light guide plate. The heat-conducting component includes a first spacer portion located between the second sub-heat-conducting component and the third sub-heat-conducting component, and at least a portion of the backlight is located within the first spacer portion.

17. The display device according to claim 15, further comprising a limiting portion fixed to the second sub-back plate, the limiting portion extending toward the display panel; The first sub-heat-conducting component includes a second spacer portion, and the limiting portion extends into the second spacer portion to limit the heat-conducting component.

18. The display device according to claim 17, wherein, The second gap extends through the first sub-heat-conducting component in the thickness direction of the first sub-heat-conducting component; The heat-conducting component further includes a third spacer portion that penetrates the third sub-heat-conducting component in the thickness direction, and the second spacer portion and the third spacer portion are connected to each other; A portion of the limiting portion is located in the second interval portion, and a portion is located in the third interval portion; in at least one direction parallel to the plane of the second sub-back plate, the width of the orthographic projection of the portion of the limiting portion located in the third interval portion onto the second sub-back plate is greater than the width of the orthographic projection of the second interval portion onto the second sub-back plate.

19. The display device according to claim 18, wherein, The third direction is from the top side of the display device to the ground side; In the third direction, the width of the second interval is greater than the width of the limiting portion when the limiting portion is located in the second interval.

20. The display device according to claim 19, wherein, The display device further includes a buffer section located between the first sub-backplate on the top side and the corresponding third sub-heat-conducting component on the top side.

21. The display device according to any one of claims 1 to 7, wherein, The backlight module includes a light guide plate and a second sub-back plate, the second sub-back plate being located on the side of the light guide plate away from the second sub-back plate; The backlight includes a first backlight and a second backlight respectively disposed on two opposite sides of the light guide plate; The display device further includes a sensor configured to detect the light output brightness of the backlight module.

22. The display device according to claim 21, wherein, The first backlight and the second backlight are controlled independently, and the sensor can detect when one of the first backlight and the second backlight is not working; the display device is configured to automatically adjust the brightness of the other of the first backlight and the second backlight so that the display device can emit light normally.

23. The display device according to claim 21, wherein, The backlight includes a backlight circuit board and a light-emitting diode light source located on the side of the backlight circuit board near the light guide plate; the display device includes a support column located on the backlight circuit board and abutting against the light guide plate, which is used to limit the position of the light guide plate.

24. The display device according to any one of claims 1 to 7, wherein, The display panel includes a color filter substrate and an array substrate that are aligned with each other, and a liquid crystal layer sandwiched between the color filter substrate and the array substrate. The display panel also includes a +A compensation layer and a +C compensation layer stacked together, wherein the +A compensation layer is closer to the liquid crystal layer than the +C compensation layer. The display panel further includes a first polarizer and a second polarizer, and the liquid crystal layer, the +A compensation layer and the +C compensation layer are all located between the first polarizer and the second polarizer.

25. The display device according to claim 8, wherein, The material of the back plate includes aluminum; on the second sub-back plate, a reinforcing rib is provided on the side adjacent to each second sub-back plate, and each reinforcing rib is a long strip extending along the corresponding side of the second sub-back plate, and adjacent reinforcing ribs do not contact each other.

26. The display device according to claim 25, wherein, A second reinforcing structure is provided on the second sub-back plate, and the reinforcing ribs are arranged around the second reinforcing structure. Each of the second reinforcing structures has an arc-shaped chamfer on a plane parallel to the main surface of the base plate.

27. The display device according to claim 1, wherein, The first part includes a first sub-part and a second sub-part, which are located on different planes; the second sub-part is closer to the cover plate relative to the first sub-part; the first sub-part is configured to support the display panel.

28. The display device according to any one of claims 1 to 7, wherein, The display panel is 27 inches or larger.

29. A medical endoscope, comprising the display device according to any one of claims 1 to 28.

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