CN103855183A - Two-dimensional and three-dimensional switching organic light-emitting display - Google Patents

Abstract

A two-dimensional three-dimensional switching organic light emitting display includes a plurality of pixel regions. Each pixel region comprises a first sub-pixel region, a second sub-pixel region, a third sub-pixel region and a fourth sub-pixel region. The first sub-pixel area, the second sub-pixel area and the third sub-pixel area are sequentially arranged in a row. The fourth sub-pixel area is positioned below the first sub-pixel area, the second sub-pixel area and the third sub-pixel area. The first sub-pixel area, the second sub-pixel area and the third sub-pixel area are respectively one of a red sub-pixel area, a green sub-pixel area and a blue sub-pixel area. The fourth sub-pixel area is a white sub-pixel area and is selectively in a bright state or a dark state. And when the fourth sub-pixel area is in a bright state, the two-dimensional three-dimensional switching organic light emitting display is used for displaying a two-dimensional image. And when the fourth sub-pixel area is in a dark state, the two-dimensional three-dimensional switching organic light emitting display is used for displaying a three-dimensional image. The two-dimensional three-dimensional switching organic light emitting display has high brightness and high pixel resolution.

Description

Two-dimensional and three-dimensional switching organic light-emitting display

technical field

The invention relates to an organic light-emitting display, in particular to a two-dimensional and three-dimensional switching organic light-emitting display.

Background technique

Organic light emitting diode (OLED) display, also known as organic electroluminescence display (OELD) or organic light emitting display, has been widely researched and applied in the field of flat panel display. Compared with a traditional liquid crystal display (LCD), due to its self-illuminating properties, it has higher brightness and does not require a backlight system. In addition, organic light-emitting displays also have excellent characteristics such as thinness, low power consumption, and larger viewing angles.

With the development of three-dimensional (3D) display technology, organic light-emitting displays gradually develop from displaying two-dimensional (2D) images to displaying three-dimensional (3D) images. Generally, a common organic light-emitting display for displaying 2D images can display 3D images by combining polarizers and 3D polarizing glasses. FIG. 1 is a schematic structural diagram of an existing organic light emitting display for displaying 3D images. The organic light emitting display 100 includes an organic light emitting display panel 110 and a polarizer 120 disposed on the display surface of the organic light emitting display panel 110 . The organic light emitting display 100 is matched with 3D polarizing glasses 130 to view images from the side of the polarizer 120 to present a 3D effect. However, when converting a 2D image into a 3D image, a problem of differential crosstalk occurs in the vertical direction. In order to improve the differential crosstalk problem in the vertical direction, the organic light-emitting display needs to design a certain range of dark areas. As shown in FIG. 1 , the dark area 140 of the organic light emitting display 100 is an additional dark area outside the pixel area 115 . However, using this method to achieve the dark area effect will reduce the pixel resolution and brightness of the organic light emitting display. In addition, the existing organic light emitting display also uses the circuit part as the dark area, but the pixel resolution of the organic light emitting display using this method to achieve the effect of the dark area is not ideal in 2D images and 3D images.

Contents of the invention

The object of the present invention is to provide a two-dimensional and three-dimensional switching organic light-emitting display, which has high pixel resolution and high brightness at the same time.

The present invention provides a two-dimensional and three-dimensional switching organic light-emitting display, which includes a plurality of pixel regions. Each pixel area includes a first sub-pixel area, a second sub-pixel area, a third sub-pixel area and a fourth sub-pixel area. The first sub-pixel area, the second sub-pixel area and the third sub-pixel area are sequentially arranged in a row. The fourth sub-pixel area is located below the first sub-pixel area, the second sub-pixel area and the third sub-pixel area. The first sub-pixel area, the second sub-pixel area, and the third sub-pixel area are respectively one of the red sub-pixel area, the green sub-pixel area, and the blue sub-pixel area. The fourth sub-pixel area is a white sub-pixel area and is selectively in a bright state or a dark state. When the fourth sub-pixel area is in a bright state, it is used to make the organic light-emitting display with two-dimensional and three-dimensional switching display two-dimensional images; when the fourth sub-pixel area is in a dark state, it is used to make the organic light-emitting display with two-dimensional and three-dimensional switching display 3D image.

In a specific embodiment of the present invention, the first sub-pixel area is a red sub-pixel area, the second sub-pixel area is a green sub-pixel area, and the third sub-pixel area is a blue sub-pixel area.

In a specific embodiment of the present invention, an organic light emitting display includes a plurality of pixel units corresponding to a plurality of pixel regions. Each pixel unit includes a plurality of organic light emitting elements, and the plurality of organic light emitting elements include a first organic light emitting element, a second organic light emitting element, a third organic light emitting element, and a fourth organic light emitting element. The first organic light emitting element, the second organic light emitting element, the third organic light emitting element and the fourth organic light emitting element are respectively located in the first sub-pixel area, the second sub-pixel area, the third sub-pixel area and the fourth sub-pixel area.

In a specific embodiment of the present invention, each pixel unit further includes a plurality of active driving elements. The plurality of active driving elements include a first active driving element, a second active driving element, a third active driving element and a fourth active driving element. The first active driving element, the second active driving element, the third active driving element and the fourth active driving element respectively correspond to the first organic light emitting element, the second organic light emitting element, the third organic light emitting element of each pixel unit The light emitting element and the fourth organic light emitting element are electrically connected.

In a specific embodiment of the present invention, the first active driving element, the second active driving element, the third active driving element and the fourth active driving element of each pixel unit are arranged in a row.

In a specific embodiment of the present invention, the first active driving element, the second active driving element, the third active driving element and the fourth active driving element of each pixel unit are arranged in a "square" shape.

In a specific embodiment of the present invention, each active driving element includes a first thin film transistor, a second thin film transistor and a capacitor. The first thin film transistor includes a first connection terminal, a second connection terminal and a third connection terminal, wherein the first connection terminal and the second connection terminal are respectively connected to the scan line and the data line. The second thin film transistor includes a fourth connection terminal, a fifth connection terminal and a sixth connection terminal, wherein the fourth connection terminal and the fifth connection terminal are respectively connected to a power supply and each organic light emitting element of each corresponding pixel unit. The capacitor includes a first electrode piece and a second electrode piece, wherein the first electrode piece and the second electrode piece are respectively connected to the third connection end of the first thin film transistor and the sixth connection end of the second thin film transistor.

In a specific embodiment of the present invention, each organic light-emitting element is a top-emission organic light-emitting element.

The beneficial effect of the present invention is that when the two-dimensional and three-dimensional switching organic light-emitting display in the present invention displays a 2D image, the fourth sub-pixel region is in a bright state and used as a white light pixel, and has a relatively high aperture ratio, so that the displayed image has a relatively high aperture ratio. High brightness; when displaying 3D images, the fourth sub-pixel area is used as a dark area in a dark state, so there is no need to design an additional dark area, and the vertical direction can be solved simply and effectively without reducing the pixel resolution and brightness. The problem of differential crosstalk, so that the organic light emitting display of the present invention has high pixel resolution and high brightness.

The above description is only an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention, it can be implemented according to the contents of the description, and in order to make the above and other purposes, features and advantages of the present invention more obvious and understandable , the following preferred embodiments are specifically cited below, and are described in detail as follows in conjunction with the accompanying drawings.

Description of drawings

FIG. 1 is a schematic diagram of an exploded structure of a conventional organic light emitting display for displaying 3D images.

FIG. 2 is a schematic diagram of the layout structure of a pixel region of the 2D and 3D switching organic light emitting display according to the first embodiment of the present invention.

FIG. 3 is a schematic layout diagram of an active driving element of a pixel unit in FIG. 2 .

FIG. 4 is a schematic layout diagram of an organic light emitting element of a pixel unit in FIG. 2 .

FIG. 5 is a schematic circuit diagram of an active driving element of an embodiment of the present invention.

FIG. 6A is a schematic diagram of displaying 2D images by the two-dimensional and three-dimensional switching organic light-emitting display of the present invention.

FIG. 6B is a schematic diagram of displaying 3D images by the two-dimensional and three-dimensional switching organic light-emitting display of the present invention.

FIG. 7 is a schematic diagram of a layout structure of a pixel region of a two-dimensional and three-dimensional switching organic light emitting display according to the second embodiment of the present invention.

FIG. 8 is a schematic diagram of the layout structure of an active driving element of a pixel unit in FIG. 7 .

FIG. 9 is a schematic diagram of a layout structure of an organic light emitting element of a pixel unit in FIG. 7 .

Detailed ways

In order to further explain the technical means and effects adopted by the present invention to achieve the intended invention purpose, the specific implementation, structure, features and effects of the present invention will be described in detail below in conjunction with the accompanying drawings and preferred embodiments.

The organic light emitting display panel of the 2D and 3D switching organic light emitting display mentioned below can display 2D images alone, and the display surface of the organic light emitting display panel is combined with a polarizer and can be viewed with 3D polarizing glasses to present a 3D display effect. For the convenience of description, the following will mainly focus on the structure of the organic light emitting display panel for further introduction. An organic light emitting display panel generally includes a plurality of pixel regions arranged in an array, and each pixel region corresponds to a pixel unit. A pixel area (corresponding to a pixel unit) will be described below.

FIG. 2 is a schematic diagram of the layout structure of a pixel region of the 2D and 3D switching organic light emitting display according to the first embodiment of the present invention. FIG. 3 is a schematic layout diagram of an active driving element of a pixel unit in FIG. 2 . FIG. 4 is a schematic layout diagram of an organic light emitting element of a pixel unit in FIG. 2 . Please refer to FIGS. 1-3 together. In this embodiment, a pixel region 210 of a two-dimensional and three-dimensional switching organic light emitting display 200 includes a first sub-pixel region 210a, a second sub-pixel region 210b, a third sub-pixel region 210c and The fourth sub-pixel area 210d. The first sub-pixel area 1210a, the second sub-pixel area 210b and the third sub-pixel area 210c are arranged in a row in sequence. The fourth sub-pixel area 210d is located below the first sub-pixel area 210a, the second sub-pixel area 210b and the third sub-pixel area 210c. The first sub-pixel area 210a, the second sub-pixel area 210b and the third sub-pixel area 210c are respectively one of the red sub-pixel area, the green sub-pixel area and the blue sub-pixel area. In this embodiment, the first sub-pixel area 210a, the second sub-pixel area 210b and the third sub-pixel area 210c are red sub-pixel area, green sub-pixel area and blue sub-pixel area respectively.

According to the above, one pixel area 210 corresponds to one pixel unit 220 . In this embodiment, the pixel unit 220 includes a plurality of organic light emitting elements 222 and an active driving element 224 electrically connected to the plurality of organic light emitting elements. The plurality of organic light emitting elements 222 include a first organic light emitting element 222a, a second organic light emitting element 222b, a third organic light emitting element 222c and a fourth organic light emitting element 222d. The first organic light emitting element 222a, the second organic light emitting element 222b, the third organic light emitting element 222c, and the fourth organic light emitting element 222d are located in the first sub-pixel area 210a, the second sub-pixel area 210b, and the third sub-pixel area 210 of the pixel area 210, respectively. The pixel area 210c and the fourth sub-pixel area 210d are respectively used to emit colored light sub-pixels. In this embodiment, the first sub-pixel area 210a is a red sub-pixel area, the second sub-pixel area 210b is a green sub-pixel area, the third sub-pixel area 210c is a blue sub-pixel area, and the fourth sub-pixel area 210d is a white sub-pixel area. Therefore, the corresponding first organic light-emitting element 222a is an organic light-emitting element that emits red light, the second organic light-emitting element 222b is an organic light-emitting element that emits green light, and the third organic light-emitting element 222c is an organic light-emitting element that emits blue light. The fourth organic light emitting element 222d is an organic light emitting element that emits white light. In addition, in this embodiment, the organic light emitting element 222 (ie, the first organic light emitting element 222a, the second organic light emitting element 222b, the third organic light emitting element 222c or the fourth organic light emitting element 222d) is, for example, a top emission type organic light emitting element.

A plurality of active driving elements 224 of a pixel unit 220 are located in a corresponding pixel area 210 and disposed below the organic light emitting element 222, and are electrically connected to the anode 226 of the organic light emitting element 222, so as to drive the organic light emitting element 222 to emit light. . The active driving element 224 includes a first active driving element 224a, a second active driving element 224b, a third active driving element 224c and a fourth active driving element 224d. In this embodiment, the first active driving element 224 a , the fourth active driving element 224 d , the second active driving element 224 b and the third active driving element 224 c of the active driving element 224 are sequentially arranged in a row. Specifically, the first active driving element 224a of the active driving element 224 is electrically connected to the anode 226a of the first organic light emitting element 222a for driving the first organic light emitting element 222a to emit red light. The second active driving element 224b is electrically connected to the anode 226b of the second organic light emitting element 222b for driving the second organic light emitting element 222b to emit green light. The third active driving element 224c is electrically connected to the anode 226c of the third organic light emitting element 222c for driving the third organic light emitting element 222c to emit blue light. The fourth active driving element 224d is electrically connected to the anode 226d of the fourth organic light emitting element 222d for driving the fourth organic light emitting element 222d to emit white light.

In this embodiment, each active driving element 224 (that is, the first active driving element 224a, the second active driving element 224b, the third active driving element 224c, or the fourth active driving element 224d) includes a first thin film A transistor 231 , a second thin film transistor 232 and a capacitor 233 . FIG. 5 is a schematic circuit diagram of an active driving element of an embodiment of the present invention. Referring to FIG. 5 , the first thin film transistor 231 includes a first connection terminal 231a, a second connection terminal 231b and a third connection terminal 231c. Wherein, the first connection end 231 a and the second connection end 231 b are respectively connected to the scan line 234 and the data line 235 . The second thin film transistor 232 includes a fourth connection terminal 232a, a fifth connection terminal 232b and a sixth connection terminal 232c. Wherein, the fourth connection terminal 232 a and the fifth connection terminal 232 b are respectively connected to the power supply OVDD and the anode 226 of each organic light emitting element 222 of each corresponding pixel unit 220 . The capacitor 233 includes a first electrode piece 233a and a second electrode piece 233b, wherein the first electrode piece 233a and the second electrode piece 233b are respectively connected to the third connection end 231c of the first thin film transistor 231 and the third connection end 231c of the second thin film transistor 232. The six connection terminals 232c are connected. The image display signal is transmitted to the active driving element 224 through the scanning line 234 and the data line 235 , and then transmitted to the corresponding organic light emitting element 222 through the active driving element 224 for driving and displaying.

When the two-dimensional and three-dimensional switching organic light-emitting display 200 designed in the above-mentioned manner is in use, please refer to FIG. The correspondingly connected organic light emitting elements emit light 222 . In particular, adjust the Gamma value (for example, Gamma value = 1) of the organic light emitting display 200 for two-dimensional and three-dimensional switching, so that the fourth active driving element 224d of the active driving element 224 of each pixel unit 220 drives the correspondingly connected fourth active driving element 224d. The four organic light emitting elements 222d emit white light, so that the fourth sub-pixel region 210d of each pixel region 210 is in a bright state for displaying 2D images. At this time, the organic light emitting display 200 with 2D and 3D switching has higher pixel resolution and brightness. Please refer to FIG. 6B , when the 2D and 3D switching organic light emitting display 200 is switched to display 3D images, the active driving element 224 of each pixel unit 220 drives the correspondingly connected organic light emitting element 222 to emit light. In particular, adjust the Gamma value (for example, Gamma value = 2), so that the fourth sub-pixel area 210d is in a dark state and used as a dark area, and can be used with 3D polarizers and 3D polarizer glasses to achieve 3D display effects when viewed by left and right eyes. Since the fourth active driving element 224d drives the correspondingly connected fourth organic light emitting element 222d to still emit white light, the brightness of the 2D and 3D switching organic light emitting display 200 displaying 3D images will not be affected. In addition, since there is no need to design an additional dark area, the pixel resolution of the 2D and 3D switching organic light emitting display 200 will not be affected. Therefore, the organic light emitting display 200 with 2D and 3D switching still has higher brightness and higher pixel resolution when displaying 3D images.

FIG. 7 is a schematic diagram of a layout structure of a pixel region of a two-dimensional and three-dimensional switching organic light emitting display according to the second embodiment of the present invention. FIG. 8 is a schematic diagram of the layout structure of an active driving element of a pixel unit in FIG. 7 . FIG. 9 is a schematic diagram of a layout structure of an organic light emitting element of a pixel unit in FIG. 7 . Please refer to FIGS. 7-9 , the structure of the 2D and 3D switching organic light emitting display 300 of the second embodiment is similar to the structure of the 2D and 3D switching organic light emitting display 200 of the first embodiment, except that each pixel unit 320 The arrangement of the active driving elements 324. The first active driving element 324a, the second active driving element 324b, the third active driving element 324 of the active driving element 324 located in a pixel unit 320 of a pixel area 310 of the organic light emitting display 300 with two-dimensional and three-dimensional switching in the second embodiment The active driving element 324c and the fourth active driving element 324d are arranged in a "Tian" shape. Specifically, the first active driving element 324a and the fourth active driving element 324d are arranged side by side in a row laterally, and the second active driving element 324b and the third active driving element 324c are arranged side by side in a row laterally, and the second The active driving element 324b is located above the first active driving element 324a and is vertically aligned with the first active driving unit 324a, and the third active driving element 324c is located at the fourth active driving element 324d and is aligned with the fourth active driving element 324a. The source driving elements 324d are arranged side by side longitudinally in a column. The first active driving element 324a, the second active driving element 324b, the third active driving element 324c, and the fourth active driving element 324d are respectively connected to the first organic light emitting element 322a and the second organic light emitting element of the corresponding pixel unit 320. 322b, the third organic light emitting element 322c or the fourth organic light emitting element 322d are electrically connected. It can be understood that the 2D and 3D switching organic light emitting display 300 of the second embodiment has the same function as the 2D and 3D switching organic light emitting display 200 of the first embodiment.

The above description is only a preferred embodiment of the present invention, and does not limit the present invention in any form. Although the present invention has been disclosed as above with preferred embodiments, it is not intended to limit the present invention. Anyone familiar with this field Those skilled in the art, without departing from the scope of the technical solution of the present invention, may use the technical content disclosed above to make some changes or modify them into equivalent embodiments with equivalent changes, but as long as they do not depart from the technical solution of the present invention, the Technical Essence Any simple modifications, equivalent changes and modifications made to the above embodiments still fall within the scope of the technical solution of the present invention.

Claims (8)

1. the three-dimensional organic light emitting display of switching of two dimension, it comprises multiple pixel regions, it is characterized in that, respectively this pixel region comprises the first sub-pixel area, the second sub-pixel area, the 3rd sub-pixel area and the 4th sub-pixel area, this first sub-pixel area, this second sub-pixel area, the 3rd sub-pixel area is arranged in order in a row, the 4th sub-pixel area is positioned at this first sub-pixel area, the below of this second sub-pixel area and the 3rd sub-pixel area, this first sub-pixel area, this second sub-pixel area and the 3rd sub-pixel area are respectively red sub-pixel district, green sub-pixels district, blue subpixels district one of them, the 4th sub-pixel area is that white sub-pixels district selectivity are bright state or are dark state, wherein, in the time that the 4th subpixel area is bright state, with so that the three-dimensional organic light emitting display of switching of this two dimension shows two dimensional image, in the time that the 4th subpixel area is dark state, with so that the three-dimensional organic light emitting display of switching of this two dimension shows 3-D view.

2. the three-dimensional organic light emitting display of switching of two dimension as claimed in claim 1, is characterized in that, this first sub-pixel area is that red sub-pixel district, this second sub-pixel area are green sub-pixels district, and the 3rd sub-pixel area is divided into blue subpixels district.

3. the three-dimensional organic light emitting display of switching of two dimension as claimed in claim 1, is characterized in that, the three-dimensional organic light emitting display of switching of this two dimension comprises multiple pixel cells of corresponding the plurality of pixel region, and respectively this pixel cell comprises:

Multiple organic illuminating elements, the plurality of organic illuminating element comprises the first organic illuminating element, the second organic illuminating element, the 3rd organic illuminating element, the 4th organic illuminating element, wherein, this first organic illuminating element, this second organic illuminating element, the 3rd organic illuminating element and the 4th organic illuminating element lay respectively at this first sub-pixel area, this second sub-pixel area, the 3rd sub-pixel area and the 4th sub-pixel area.

4. the three-dimensional organic light emitting display of switching of two dimension as claimed in claim 3, is characterized in that, respectively this pixel cell also comprises:

Multiple active driving elements, the plurality of active driving element comprises the first active driving element, the second active driving element, the 3rd active driving element and the 4th active driving element, and this first active driving element, this second active driving element, the 3rd active driving element and the 4th active driving element are electrically connected with this first organic illuminating element, this second organic illuminating element, the 3rd organic illuminating element and the 4th organic illuminating element of corresponding respectively this pixel cell respectively.

5. the three-dimensional organic light emitting display of switching of two dimension as claimed in claim 4, it is characterized in that, respectively this first active driving element of this pixel cell, this second active driving element and the 3rd active driving element and the 4th active driving element are arranged in a row.

6. the three-dimensional organic light emitting display of switching of two dimension as claimed in claim 4, it is characterized in that, respectively this first active driving element of this pixel cell, this second active driving element, the 3rd active driving element and the 4th active driving element are the arrangement of sphere of movements for the elephants shape.

7. the three-dimensional organic light emitting display of switching of two dimension as claimed in claim 4, it is characterized in that, respectively this active driving element comprises the first film transistor, the second thin-film transistor and electric capacity, this the first film transistor comprises the first link, the second link and the 3rd link, this first link and this second link are connected to respectively scan line and data wire, this second thin-film transistor comprises the 4th link, the 5th link and the 6th link, the 4th link and the 5th link are connected to respectively respectively this organic illuminating element of respectively this pixel cell of power supply and correspondence, this electric capacity comprises the first electrode slice and the second electrode slice, this first electrode slice is connected with the 3rd link of this first film electric crystal and the 6th link of this second thin-film transistor respectively with this second electrode slice.

8. the three-dimensional organic light emitting display of switching of two dimension as claimed in claim 3, is characterized in that, respectively this organic illuminating element is top emission type organic illuminating element.

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