CN106803400A - Frame-free displaying device - Google Patents

Abstract

A kind of frame-free displaying device, is spliced by multiple display units；Each display unit includes display panel, frame, backlight module and stretch element；Display panel includes display surface and the non-display face opposite with the display surface, frame is formed in the edge of display panel and surrounds display panel, backlight module is relative with non-display face, backlight module includes back light, stretch element is relative with display surface, and each display unit also includes that light compensates module, and light compensation module is set and including light guide plate and compensatory light near frame, form jagged at light guide plate correspondence back light, the light of back light is injected in display panel through breach.The frame-free displaying device that the present invention is provided, can avoid display picture from brightness non-uniform phenomenon occur.

Description

Borderless display device

technical field

The present invention relates to a display device, in particular to a frameless display device composed of several display units.

Background technique

Large-sized display devices, such as outdoor display screens, have been widely used in various video control centers, outdoor advertising and other fields. Since the maximum size of a single display can only be 100 inches, the outdoor display screen is generally composed of a plurality of relatively small-sized display units, and the plurality of display units cooperate to display an overall picture. However, each display unit includes a frame, which causes the picture displayed on the entire outdoor display screen to be divided by the frame, resulting in discontinuous picture display, thereby affecting the display effect.

In the prior art, an optical structure is often used to elongate the picture near the frame to solve the above problems. In this way, the light emitted by the same backlight module will be darker near the frame than in the central part, resulting in uneven light and darkness of the entire display screen, thereby affecting the quality of the display screen.

Contents of the invention

In view of this, the present invention provides a frameless display device capable of avoiding the phenomenon of uneven light and dark in the display screen.

A frameless display device, which is spliced by a plurality of display units; each display unit includes a display panel, at least one frame, a backlight module and an image extension element; the display panel includes a display surface and a The non-display surface opposite to the display surface, the frame is formed on the edge of the display panel and surrounds the display panel, the backlight module is opposite to the non-display surface, the backlight module includes at least one backlight source, and the image is elongated The element is opposite to the display surface, and is used to enlarge and guide the image emitted from the display surface close to the frame to the frame; each display unit also includes a light compensation module, and the light compensation module is close to the frame Set and include at least one light guide plate and at least one compensation light source, the light guide plate is formed with a gap corresponding to the backlight source, the light of the backlight source passes through the gap and enters the display panel; the light of the compensation light source enters the guide The light plate is guided by the light guide plate to the display panel close to the frame, so as to compensate the brightness loss caused by the enlarged image.

In the frameless display device provided by the present invention, a light compensation module is arranged near the frame to compensate for the decrease in illuminance caused by enlarging the display screen, so that the illuminance of the light entering the elongated image area is the same as that of the light entering the image observation area. The illuminance is consistent, thereby avoiding the phenomenon of uneven light and dark in the display screen, thereby improving the quality of the display screen.

Description of drawings

FIG. 1 is a schematic diagram of a borderless display device provided by an embodiment of the present invention.

FIG. 2 is a partial cross-sectional view of a display unit of the frameless display device shown in FIG. 1 .

FIG. 3 is a schematic diagram of an optical compensation module of the display unit shown in FIG. 2 .

FIG. 4 is a schematic diagram of a light guide plate of the display unit shown in FIG. 3 .

FIG. 5 is a schematic diagram of another light guide plate of the display unit shown in FIG. 3 .

FIG. 6 is a schematic light diagram of a display unit of the frameless display device shown in FIG. 2 .

Description of main component symbols

Borderless display device 100 Display unit 10 border area 101 image elongated area 102 Image observation area 103 display panel 11 display surface 111 non-display surface 112 frame 12 Backlight module 13 circuit board 131 Backlight 132 Diffusion plate 133 first support 134 Optical Compensation Module 14 light guide plate 141 light emitting surface 1411 Light incident surface 1412 bottom surface 1413 side 1414 compensation light source 142 gap 143 image stretcher 15 central part 151 curved part 152 optical amplification structure 153 second support 16

The following specific embodiments will further illustrate the present invention in conjunction with the above-mentioned drawings.

detailed description

The borderless display device provided by the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

Referring to FIGS. 1-6 , a frameless display device 100 includes a plurality of display units 10 arranged in an array. In this embodiment, the borderless display device 100 includes nine display units 10 arranged in a 3×3 matrix, and the nine display units 10 are arranged without gaps between each other. In other implementations, the borderless display device 100 may also include other numbers of display units 10 , which is not limited to what is disclosed in this implementation.

In this embodiment, the display unit 10 is a liquid crystal display unit, and in other embodiments, the display unit 10 may also be a plasma display unit.

Each display unit 10 is artificially divided into three parts: a frame area 101 , an image elongated area 102 and an image viewing area 103 . The frame area 101 surrounds the image elongated area 102 , and the image elongated area 102 encloses the image observation area 103 .

Each display unit 10 includes a display panel 11 , a frame 12 , a backlight module 13 , a light compensation module 14 , an image elongating element 15 and a plurality of second support members 16 .

The display panel 11 includes a display surface 111 and a non-display surface 112 opposite to the display surface 111 . The display surface 111 is used for displaying images.

The frame 12 corresponds to the frame area 101 and is installed on the edge of the display panel 11 and surrounds the display surface 111 . The frame 12 is used for fixing and supporting the display panel 11 . The frame 12 is made of opaque resin material, and its color is generally black.

The backlight module 13 includes a circuit board 131 , a plurality of backlight sources 132 , a diffuser plate 133 and a plurality of first support members 134 .

The circuit board 131 is fixed in the frame 12 , and the circuit board 131 is opposite to the display panel 11 . The display panel 11 , the frame 12 and the circuit board 131 form a space L, and the plurality of backlight sources 132 , the diffusion plate 133 and the plurality of first support members 134 are located in the space L.

A plurality of the backlight sources 132 are evenly distributed on the mounting surface of the circuit board 131 and electrically connected to the circuit board 131 . A plurality of the backlight light sources 132 correspond to the image viewing area 103 . The multiple backlight light sources 132 may be common light sources such as light emitting diodes (light emitting diodes, LEDs) or laser diodes (diode lasers, LDs).

The diffusion plate 133 is attached to the non-display surface 112 and aligned with the plurality of backlight sources 132 to diffuse and transmit the light emitted by each of the backlight sources 132 .

A plurality of the first support members 134 are uniformly disposed on the mounting surface of the circuit board 131 and are used for supporting and fixing the diffuser plate 133 . In this embodiment, the first supporting member 134 is trapezoidal, and in other embodiments, the first supporting member 134 may also be in other shapes.

Each of the light compensation modules 14 corresponds to the image elongated area 102 and is opposite to each of the display panels 11 . The light compensation module 14 is located in the space L and is used for compensating the light located in the image elongated region 102, so as to ensure that the picture displayed on the display surface 111 does not appear light and dark, thereby improving the quality of the displayed picture. .

The light compensation module 14 includes at least one light guide plate 141 and at least one compensation light source 142 .

The light guide plate 141 is opposite to the image elongated area 102 . A notch 143 is formed on the light guide plate 141 corresponding to the backlight source 132 , and light from the backlight source 132 enters the display panel 11 through the notch 143 . The light from the compensating light source 142 enters the light guide plate 141 and is guided by the light guide plate 141 to the display panel 11 close to the frame 12 to compensate the brightness loss caused by the enlarged image. The notch 143 can be formed solely by a return-shaped light guide plate, or can be surrounded by multiple light guide plates.

In this embodiment, the notch 143 is surrounded by four rectangular light guide plates 141 .

The light guide plate 141 includes a light emitting surface 1411 , a light incident surface 1412 , a bottom surface 1413 opposite to the light emitting surface 1411 , and three side surfaces 1414 perpendicular to the light emitting surface 1411 .

The light emitting surface 1411 faces the display surface 111 of the display panel 11 and abuts against the diffuser plate 133 . A plurality of microstructures are formed on the bottom surface 1413 to change the direction of the light incident into the light guide plate 141 so that it can vertically radiate from the light emitting surface 1411 to the diffuser plate 133 . Two of the side surfaces 1414 intersect with the light incident surface 1412 , and the other of the side surfaces 1414 is opposite to the light incident surface 1412 . A reflective film (not shown) is respectively formed on the three side surfaces 1414 to enhance the reflectivity of the side surfaces and avoid light leakage. A plurality of the compensation light sources 142 are evenly distributed on the light incident surface 1412 and are electrically connected to the circuit board 131, and the light emitted by the plurality of compensation light sources 142 enters the light guide plate 141 from the light incident surface 1412 and passes through the bottom surface The reflection of the microstructure on 1413 is emitted vertically from the light-emitting surface 1411 .

The compensation light source 142 is a common light source such as a light emitting diode (light emitting diode, LED) or a laser diode (diode laser, LD).

The plurality of second support members 16 are used to support the light guide plate 141 and abut the light guide plate 141 on the diffuser plate 133 . In this embodiment, the second supporting member 16 is a trapezoidal supporting member, the second supporting member 16 includes a supporting plane 1431 , and the light guide plate 141 is located on the supporting plane 1431 . In other embodiments, the second support member 16 can also be in other shapes, such as cone shape, cylinder shape and so on.

The image stretching element 15 is used to enlarge and guide the image emitted from the display surface 111 close to the frame 12 to above the frame 12, so that the existence of the frame is invisible, or at least for viewing in a predictable viewing angle. It is not quite obvious to those who exist.

In this embodiment, the image elongating element 15 is a housing cover. The housing cover is used to protect the display unit 10 from dust, water vapor pollution or external force damage. The housing cover includes a flat central portion 151 and a curved portion 152 surrounding the central portion 151 . Both the central portion and the curved portion are transparent.

The image elongating element 15 also includes an optical amplification structure 153 . The optical amplification structure 153 is located on the frame 12 and formed on the inner surface of the curved portion 152 .

The optical amplifying structure 153 is opposite to the frame area 101 and the image elongation area 102 , and is used for amplifying and guiding the image emitted from the display surface 111 near the frame 12 onto the frame 12 . The optical amplification structure 153 is composed of a plurality of micro optical prisms. In this embodiment, the optical prism is a Fresnel lens.

In the borderless display device 100 provided by the present invention, a light compensation module 14 is arranged directly under the image elongated area 102 to compensate for the loss of illuminance caused by enlarging the display screen, so that the illuminance of light entering the image elongated area 102 It is consistent with the illuminance of the light entering the image observation area 103 , thereby avoiding unevenness of light and darkness in the display screen, thereby improving the quality of the display screen.

It can be understood that the above embodiments are only used to illustrate the present invention, and are not intended to limit the present invention. For those skilled in the art, other corresponding changes and deformations made according to the technical concept of the present invention all fall within the protection scope of the claims of the present invention.

Claims (8)

1. A frameless display device, which is spliced by a plurality of display units; each display unit includes a display panel, at least one frame, a backlight module and an image elongating element; the display panel includes a display surface and A non-display surface opposite to the display surface, the frame is formed on the edge of the display panel and surrounds the display panel, the backlight module is opposite to the non-display surface, the backlight module includes at least one backlight source, and the image puller The long element is opposite to the display surface, and is used to enlarge and guide the image emitted from the display surface close to the frame to the frame; it is characterized in that each display unit also includes a light compensation module, and the light compensation The module is arranged close to the frame and includes at least one light guide plate and at least one compensation light source. A gap is formed on the light guide plate corresponding to the backlight source, and the light of the backlight source passes through the gap and enters the display panel; the compensation light source The light enters the light guide plate and is guided by the light guide plate to the display panel close to the frame, so as to compensate the brightness loss caused by the enlarged image. 2. The frameless display device according to claim 1, wherein the light guide plate comprises a light-emitting surface, a bottom surface opposite to the light-emitting surface, and three side surfaces perpendicular to the light-emitting surface; the compensation light source uniformly Distributed on the light incident surface, a plurality of microstructures are formed on the bottom surface, and a reflection film is formed on the three side surfaces respectively. 3. The frameless display device according to claim 1, wherein the backlight module further comprises a circuit board, a diffusion plate and a plurality of first support members, the edges of the circuit board are fixed in the frame and Opposite to the non-display surface, the backlight source is installed on the mounting surface of the circuit board and electrically connected with the circuit board, a plurality of the first support members are evenly arranged on the mounting surface of the circuit board, and the diffusion plate is located on multiple on the first support member and aligned with the plurality of backlight sources and in contact with the non-display surface. 4. The borderless display device according to claim 3, characterized in that, the borderless display device further comprises a plurality of second support members, the light guide plate is located on the second support members, the light guide plate and the diffuser plate meet each other. 5. The borderless display device according to claim 1, wherein the image elongated element is a housing cover, and the housing cover comprises a flat central portion and a curved portion surrounding the central portion . 6. The borderless display device as claimed in claim 5, wherein both the central portion and the curved portion are transparent. 7. The frameless display device according to claim 5, wherein the elongated image element further comprises an optical magnification structure, the optical magnification structure is located on the frame and formed on the inner surface of the curved portion, It is used to enlarge and guide the image emitted from the display surface close to the frame to be above the frame. 8. The frameless display device according to claim 7, wherein the optical amplification structure is composed of a plurality of micro-optical prisms.