CN201015076Y

CN201015076Y - Outdoor display screen

Info

Publication number: CN201015076Y
Application number: CNU2007201183664U
Authority: CN
Inventors: 丁会杰
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-01-30
Filing date: 2007-01-30
Publication date: 2008-01-30
Anticipated expiration: 2017-01-30

Abstract

This utility model discloses a outdoor display screen, including a plurality of display unit boards 12 which are used to combine a rectangle screen; each display unit board is installed with display modules densely, and each display module is provided with a plurality of light pixels, and each pixel is packaged with two light-emitting diode chips with same colors which are connected in series or in parallel. Because this outdoor display screen can directly use the parts of indoor module, when the screen is used outdoors, the cost is low, the angle of visibility is large, the display density is high, the smoothness of display screen is fine, the feasibility is high and the production flow is simple compared with prior art.

Description

Outdoor display screen

Technical field

The utility model relates to display technique, and more particularly, the utility model relates to a kind of outdoor display screen.

Background technology

Traditional outdoor monochromatic LED display screen all is that the luminotron with a plurality of straight cuttings is welded in and makes module on the PCB, a plurality of modules are spliced to form the demonstration giant-screen, led chip improves brightness by the lensing of light emitting diode colloid, thereby makes LED luminous in the sun as seen.Shortcoming such as the outdoor display screen that this mode is made has the cost height, visible angle is little, display density is not high, flatness is difficult to assurance, poor reliability, production procedure increase.

The utility model content

The technical problems to be solved in the utility model provides a kind of outdoor display screen, can overcome the above-mentioned shortcoming of prior art, and lower cost is arranged, and bigger visible angle has higher density and display resolution, preferably planarization.

The above-mentioned technical matters of the utility model solves like this, construct a kind of outdoor display screen, comprise a plurality of display unit plates that are used to be spliced into rectangular screen, the intensive display module that is equipped with on each display unit plate, each display module has several light emitting pixels, and each pixel is packaged with the light-emitting diode chip for backlight unit more than 1.

Wherein, described light-emitting diode chip for backlight unit more than 1 is the light-emitting diode chip for backlight unit with a kind of color.

Wherein, the number of described light-emitting diode chip for backlight unit with a kind of color is 2.

Wherein, the number of described light-emitting diode chip for backlight unit with a kind of color is 3.

Wherein, described light-emitting diode chip for backlight unit with a kind of color is connected in series.

Wherein, described light-emitting diode chip for backlight unit with a kind of color is connected in parallel.

Wherein, described each display module comprises the some light emitting pixel of 5 row *, 8 row or 8 row *, 8 row or 16 row *, 16 row.

Implement the outdoor display screen that the utility model provides, has following beneficial effect, because display module can adopt the external member of indoor module, the led chip that each pixel is installed two same colors on display module is packaged into 5 row *, 8 row or 8 row *, 8 row or 16 row *, 16 row lattice modules, module is welded on the unit drives plate of certain corresponding size, be assemblied to form outdoor demonstration giant-screen by cell board, therefore, this outdoor display screen has advantages such as cost is low, angle is big, display density is high, the display screen flatness is good, feasibility is high, and production procedure is few.

Description of drawings

The utility model is described in further detail below in conjunction with drawings and Examples, in the accompanying drawing:

Fig. 1 is the structural representation of the utility model outdoor display screen;

Fig. 2 A is the synoptic diagram (from the front) of display module one embodiment of the utility model outdoor display screen;

Fig. 2 B is the synoptic diagram (from the front) of another embodiment of display module of the utility model outdoor display screen;

Fig. 3 is the part section structural representation of picture element in the display module shown in Figure 2;

Fig. 4 A is according to an embodiment of the present utility model, led chip connected mode synoptic diagram in the picture element;

Fig. 4 B is according to another embodiment of the present utility model, led chip connected mode synoptic diagram in the picture element;

Fig. 4 C is according to another embodiment of the present utility model, led chip connected mode synoptic diagram in the picture element;

Embodiment

As shown in Figure 1, outdoor display screen of the present utility model comprises erecting frame 10 and a plurality of display unit plates 12 mounted thereto.A plurality of display unit plates 12 are closely arranged, and are spliced into a big rectangular display screen.In the embodiment shown in fig. 1, adopted 6 blocks of display unit plates, be divided into two rows, 3 of every rows.Be not limited thereto kind of an arrangement in the practical application.Also intensive on each display unit plate 12 a plurality of display modules 15 are installed.Such as but not limited to, on each display unit plate 12 9 display modules 15 can be installed.

Fig. 2 A and Fig. 2 B are the synoptic diagram that display module is seen from the front.As we can see from the figure, each display module 15 is provided with several light-emitting pixels points 20.In the present embodiment, the pixel dot matrix is 8 row *, 8 row.As selection, the pixel dot matrix can also be 5 row *, 8 row, 16 row *, 16 row etc., can customize according to user's needs.In addition, as can be seen from the figure, Fig. 2 A and Fig. 2 B difference are, the surrounding of display module is concordant shown in Fig. 2 B, and that the surrounding of display module shown in Fig. 2 A is provided with is recessed/protrude 18 parts, and relative both sides recessed/to protrude be opposite, when splicing is on display unit plate 12, recessed/projection just in time cooperatively interacts, and realizes jointless mosaic.

In outdoor display screen of the present utility model, picture element 20 is the eyelet shape, wherein in each eyelet two or more led chips is installed.Below in conjunction with Fig. 3 the structure of picture element is described.

Fig. 3 is the side from Fig. 2, along wherein one arranging the part figure that pixel eyelet central shaft is cut open.As shown in the figure, substrate 28 is provided with pixel eyelet 22, is packaged with two led chips 26 in each pixel eyelet 22, and each eyelet encapsulates with light transmissive material, and forms a smooth printing opacity encapsulating face 23 on the eyelet surface.For the light wave that makes led chip emission towards the outside, the eyelet inwall is designed to the shape of reflector.As selection, for further improving brightness, the quantity of the led chip 26 in the pixel eyelet can increase, as is increased to three, four ...In addition, in outdoor display screen of the present utility model, the glow color of a plurality of led chips 26 in the pixel eyelet 22 of display module is with a kind of color.

According to the utility model, the driving circuit of display module can be arranged to matrix form, as go dot matrix at 8 row * 8 shown in Figure 2, design of drive circuit can be become the matrix circuit of 8*8, and this display driver circuit is located at the back side of display module, control lighting of each pixel or extinguish by control circuit.Each display module is welded on the display unit plate of certain corresponding size, is assemblied to form outdoor demonstration giant-screen by the display unit plate.

Led chip in each pixel eyelet 22 can be in parallel, shown in Fig. 4 A and Fig. 4 B; Also can connect, shown in Fig. 4 C.Because the led chip in the eyelet 22 is a same color, be to improve brightness, can adopt that any mode connects among Fig. 4 A to Fig. 4 C.In this case, the scheme among employing Fig. 4 B can also be adjusted the luminous intensity of light-emitting pixels in the display module according to the environment light intensity.As background light intensity on daytime, need to strengthen the luminous intensity of light-emitting pixels, all switch on can for this moment three paths of LEDs chips.When night, background was dark, only needs to connect a paths of LEDs chip and can reach satisfied visual effect.

Because the utility model has adopted the demonstration module of integrated LED chip, it can directly be produced in batches by chip production manufacturer, compare with the outdoor display screen that adopts the manufacturing of discrete LED device by its outdoor display screen of making, have good, the advantages such as reliability is high, low cost of manufacture of flatness.In addition,, led chip shows on the module because can being integrated in to high-density, so the image resolution ratio height that shows, image is more clear.Also have, because module adopts overall package, its printing opacity encapsulating face is flat shape substantially, and the display effect of led chip is subjected to angle limits less, makes effective angle of visibility increase.Have again,, both satisfied the luminous requirement of outdoor luminous environment, also make the user can adjust the luminous intensity of light-emitting pixels, more more options are provided according to the environment light intensity owing to can encapsulate two or more led chips in each pixel.

Claims

1. outdoor display screen, comprise a plurality of display unit plates that are used to be spliced into rectangular screen, the intensive display module (15) that is equipped with on each display unit plate, each display module (15) has several light emitting pixels (20), it is characterized in that, be packaged with the light-emitting diode chip for backlight unit (26) more than 1 in each pixel (20).

2. outdoor display screen according to claim 1 is characterized in that, described light-emitting diode chip for backlight unit (26) more than 1 is the light-emitting diode chip for backlight unit with a kind of color.

3. outdoor display screen according to claim 2 is characterized in that, the number of described light-emitting diode chip for backlight unit with a kind of color (26) is 2.

4. outdoor display screen according to claim 2 is characterized in that, the number of described light-emitting diode chip for backlight unit with a kind of color (26) is 3.

5. according to claim 3 or 4 described outdoor display screens, it is characterized in that described light-emitting diode chip for backlight unit with a kind of color (26) is connected in series.

6. according to claim 3 or 4 described outdoor display screens, it is characterized in that described light-emitting diode chip for backlight unit with a kind of color (26) is connected in parallel.

7. according to claim 3 or 4 described outdoor display screens, it is characterized in that described each display module (15) comprises the some light emitting pixel of 5 row *, 8 row or 8 row *, 8 row or 16 row *, 16 row.