Unlock instant, AI-driven research and patent intelligence for your innovation.

Matrix circuit for display device for home appliance, display device, and home appliance

A technology of matrix circuits and household appliances, applied in the direction of instruments, static indicators, etc., can solve problems such as damage and destruction of light-emitting diodes

Active Publication Date: 2021-01-08
BOSCH SIEMENS HAUSGERATE GMBH
View PDF18 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this case, the cut-off voltage drops across the light-emitting diodes and leakage currents can flow through the light-emitting diodes in cut-off operation, which leakage currents can damage or destroy the light-emitting diodes

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Matrix circuit for display device for home appliance, display device, and home appliance
  • Matrix circuit for display device for home appliance, display device, and home appliance
  • Matrix circuit for display device for home appliance, display device, and home appliance

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0030] figure 1 A domestic appliance 1 according to the invention is shown. The household appliance 1 can be configured, for example, as a household appliance for cleaning or drying laundry, for example as a washing machine or a washer-dryer, as a household appliance for preparing or cooking food, for example as a cooker or a stove , configured as a household appliance for preserving and storing food, such as a refrigerator, a freezer or a refrigerator-freezer combination, configured as a household appliance for cleaning tableware, such as a dishwasher, and as a drawer Range hood or configured as a fully automatic coffee machine. The domestic appliance 1 has a display device 2 , which is used, for example, to display information for a user of the domestic appliance 1 (not shown here). Display device 2 can be designed, for example, as a seven-segment display. The display device 2 has a matrix circuit 3 .

[0031] exist figure 2 A matrix circuit 3' already known from the p...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a matrix circuit (3) for a display device (2) of a domestic appliance (1) having a predetermined number of light-emitting diodes (D1 to D9) which are connected by means of respective supply lines (LZ, LS) in lines (Z1, Z2, Z3) and columns (S1, S2, S3). The columns (S1, S2, S3) and lines (Z1, Z2, Z3) have respective controllable switching elements (4, 6) for switching an electrically conductive connection between the respective supply line (LS) of the column (S1, S2, S3) and a supply terminal (5) of the matrix circuit (3) and between the respective supply line (LZ) of a line (Z1, Z2, Z3) and an earth terminal (7) of the matrix circuit (3). The matrix circuit (3) has for each column (S1, S2, S3) a respective first resistance (R1) which, for electrical connection of the respective supply line (LS) to the supply terminal (5), is connected in parallel with the controllable switching element (4) of the respective column (S1, S2, S3). Alternatively, the matrix circuit (3) has for each column (S1, S2, S3) at least one first resistance (R1) which, for electrical connection of the respective supply line (LS) to the supply terminal (5), is connected in parallel with the first controllable switching element (4) of the respective column (S1, S2, S3). The invention further relates to a display device (2) and to a domestic appliance (1).

Description

technical field [0001] The invention relates to a matrix circuit for a display device of a household appliance, said matrix circuit having a predetermined number of light-emitting diodes arranged in rows and columns, wherein in each row the cathodes of said light-emitting diodes are passed through The power supply lines are electrically connected, and in each column, the anodes of the light-emitting diodes are electrically connected through the power supply lines, and each column includes a controllable first switch element for switching the corresponding power supply line and the matrix circuit Conductive connection between the power supply connection terminals, the power supply connection terminal has a first potential, and each row includes a controllable second switching element for switching between the corresponding power supply line and the ground connection terminal of the matrix circuit The ground connection terminal has a second potential that is lower than the first...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/32
CPCG09G3/32G09G2300/06G09G2320/0209G09G2330/04
Inventor A.阿齐兹G.吉特尔C.加卢斯
Owner BOSCH SIEMENS HAUSGERATE GMBH