# US 2013/0153876 A1 · Display device, method of laying out light emitting elements, and electronic device

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- Number: US 2013/0153876 A1
- Document ID: US20130153876A1
- Status: Published application
- Kind: A1
- Application number: 13/763,745
- Filed: 2013-02-11
- Published: 2013-06-20
- Earliest claimed: 2008-05-21
- Assignees: Sony Corporation
- Inventors: Tetsuo Minami; Katsuhide Uchino
- Web page: https://patentgrep.com/patent/US20130153876A1

## CPC

- G09G 3/3233: with pixel circuitry controlling the current through the light-emitting element
- G09G 3/2003: {Display of colours (specific for liquid crystal displays G09G3/3607)}
- G09G 3/2074: {using sub-pixels}
- G09G 3/3266: Details of drivers for scan electrodes
- H10K 59/121: characterised by the geometry or disposition of pixel elements
- H10K 59/1213: {the pixel elements being TFTs}
- H10K 59/1216: {the pixel elements being capacitors}
- H10K 59/131: Interconnections, e.g. wiring lines or terminals
- H10K 59/35: comprising red-green-blue [RGB] subpixels
- H10K 59/352: {the areas of the RGB subpixels being different}
- H10K 59/353: {characterised by the geometrical arrangement of the RGB subpixels}
- G09G 2300/0443: with several sub-pixels for the same colour in a pixel, not specifically used to display gradations (G09G3/364 takes precedence)
- G09G 2300/0452: Details of colour pixel setup, e.g. pixel composed of a red, a blue and two green components
- G09G 2300/0819: used for counteracting undesired variations, e.g. feedback or autozeroing
- G09G 2300/0842: forming a memory circuit, e.g. a dynamic memory with one capacitor
- G09G 2300/0852: being a dynamic memory with more than one capacitor
- G09G 2310/0289: Details of voltage level shifters arranged for use in a driving circuit
- G09G 2320/0233: Improving the luminance or brightness uniformity across the screen
- G09G 2320/043: Preventing or counteracting the effects of ageing
- G09G 2320/045: Compensation of drifts in the characteristics of light emitting or modulating elements
- G09G 2320/0626: for control of overall brightness
- H10K 59/351: {comprising more than three subpixels, e.g. red-green-blue-white [RGBW]}
- G09G: ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION (arrangements for transferring data between digital computers and displays G06F3/14; static indicating arrangements comprising an association of a number of separate sources or light control cells G09F9/00; static indicating arrangements comprising integral associations of a number of light sources H01J, H01K, H10H, H05B33/12; scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission, details thereof H04N1/00)
- H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES

## Abstract

Disclosed herein is a display device in which light emitting elements of a plurality of colors including a light emitting element emitting blue light are formed in each pixel on a substrate on which a transistor is formed for each sub-pixel, and a plurality of pixels formed with sub-pixels of the plurality of colors as a unit are arranged in a form of a matrix, wherein relative positional relation between transistors of sub-pixels of respective light emission colors including blue light and a light emitting section of a light emitting element emitting the blue light is laid out such that distances between the transistors of the sub-pixels of the respective light emission colors including the blue light and the light emitting section of the light emitting element emitting the blue light are equal to each other for the respective colors.

## Claims

### Claim 1

A display device comprising:
a plurality of pixels arranged in a form of a matrix, each of the plurality of pixels including a first light emitting section configured to emit blue light, a second light emitting section configured to emit green light, and a third light emitting section configured to emit red light,
wherein, for each of the plurality of pixels
the first light emitting section is formed in a first shape that is substantially rectangular and longer in a first direction than a second direction perpendicular to the first direction,
the second light emitting section and the third light emitting section are disposed adjacent to each other in the first direction and are formed in respective shapes that are closer to square than the first shape, and
the first light emitting section, the second light emitting section, and the third light emitting section are driven by respective corresponding subpixel circuits that each include a first transistor, a second transistor, a first capacitance, and a second capacitance, the second transistor being configured to sample a signal voltage from a signal line to the first capacitance, and the first transistor being configured to control a current from a power supply line to the corresponding light emitting section according to the sampled signal voltage.

### Claim 2 (depends on 1)

The display device according to claim 1, wherein, for each of the plurality of pixels, the first light emitting section is disposed adjacent to the second light emitting section and the third light emitting section in the second direction.

### Claim 3 (depends on 2)

The display device according to claim 2, wherein, for each of the plurality of pixels, a longitudinal side of the first light emitting section extends so as to cover respective widths of the second light emitting section and the third light emitting section in the first direction.

### Claim 4 (depends on 1)

The display device according to claim 1, wherein, for each of the plurality of pixels, the respective first transistors of the subpixels corresponding to the first light emitting section, the second light emitting section, and the third light emitting section are arranged along the first direction.

### Claim 5

A display panel comprising:
a pixel that includes a first light emitting section configured to emit blue light, a second light emitting section configured to emit green light, and a third light emitting section configured to emit red light,
wherein the first light emitting section is formed in a first shape that is longer in a first direction than a second direction perpendicular to the first direction,
the second light emitting section and the third light emitting section are disposed adjacent to each other in the first direction and are formed in second and third shapes, respectively, that are less oblong than the first shape, and
the first light emitting section, the second light emitting section, and the third light emitting section are driven by respective corresponding subpixel circuits that each include a first transistor, a second transistor, a first capacitance, and a second capacitance, the second transistor being configured to sample a signal voltage from a signal line to the first capacitance, and the first transistor being configured to control a current from a power supply line to the corresponding light emitting section according to the sampled signal voltage.

### Claim 6 (depends on 5)

The display panel of claim 5, wherein:
the first shape is substantially rectangular with rounded corners, and
the second and third shapes are substantially the same as each other and are substantially rectangular with rounded corners.

### Claim 7 (depends on 6)

The display panel of claim 6, wherein, the first, second, and third shapes are configured such that,
when the length of a first longitudinal side of the first light emitting section is designated as A and the length of one of the sides of the first light emitting section adjacent to the first longitudinal side thereof is designated as B,
when the length of a first longitudinal side of the second light emitting section is designated as C and the length of one of the sides of the second light emitting section adjacent to the first longitudinal side thereof is designated as D, and
when the length of a first longitudinal side of the third light emitting section is designated as E and the length of one of the sides of the second light emitting section adjacent to the first longitudinal side thereof is designated as F,
the following relations hold:
A
B
>
C
D
;
and
A
B
>
E
F
.

### Claim 8 (depends on 7)

The display panel of claim 7, wherein the first light emitting section is disposed adjacent to the second light emitting section and the third light emitting section in the second direction.

### Claim 9 (depends on 8)

The display panel of claim 8, wherein the first longitudinal side of the first light emitting section extends so as to cover respective widths of the second light emitting section and the third light emitting section in the first direction.

### Claim 10 (depends on 6)

The display panel of claim 6, wherein the first light emitting section is disposed adjacent to the second light emitting section and the third light emitting section in the second direction.

### Claim 11 (depends on 10)

The display panel of claim 10, wherein a longitudinal side of the first light emitting section extends so as to cover respective widths of the second light emitting section and the third light emitting section in the first direction.

### Claim 12

A display panel comprising:
a pixel that includes a first organic light emitting diode configured to emit blue light, a second organic light emitting diode configured to emit green light, and a third organic light emitting diode configured to emit red light,
wherein the first organic light emitting diode is formed in a first shape that is longer in a first direction than a second direction perpendicular to the first direction,
the second organic light emitting diode and the third organic light emitting diode are disposed adjacent to each other in the first direction and are formed in second and third shapes, respectively, that are less oblong than the first shape, and
the first organic light emitting diode, the second organic light emitting diode, and the third organic light emitting diode are driven by respective corresponding subpixel circuits that each include a first transistor, a second transistor, a first capacitance, and a second capacitance, the second transistor being configured to sample a signal voltage from a signal line to the first capacitance, and the first transistor being configured to control a current from a power supply line to the corresponding organic light emitting diode according to the sampled signal voltage.